Need AS to display results of Math inside script!

I am making a change to a script someone else built for me.
Part of it was used to create a file in InDesign with specific width and height based on info the user typed in.

I am being asked to use the math inside the old script, and make a new script which only displays the width and height returned from the math. HELP
How do I get it to display the result?

tell application "Finder"
	
	activate
	set numPages to text returned of (display dialog "Enter number of pages:" default answer 100) as number
	if (numPages mod 4) is not equal to 0 then
		error "The number of pages must be divisible by 4."
	else if (numPages is less than 4) or (numPages is greater than 532) then
		error "The number of pages must be between 4 and 532."
	else if (numPages is less than 44) then
		set bindingType to "Saddle Stitch"
	else if (numPages is greater than 40) and (numPages is less than 84) then
		set bindingType to button returned of (display dialog "Please choose a binding type:" buttons {"Saddle Stitch", "Perfect Binding"})
	else if (numPages is greater than 80) then
		set bindingType to "Perfect Binding"
	end if
	set pageWidth to text returned of (display dialog "Enter page width in inches:" default answer 8.375) as number
	set pageHeight to text returned of (display dialog "Enter page height in inches:" default answer 10.875) as number
	set pageweight to text returned of (display dialog "Enter paper weight of text pages in decimal." & return & "Standard text (50# Williamsburg)= .0039" & return & "Gusto 70# Satin =  .0035" & return & "Gusto 70# Gloss = .0032" default answer 0.0039) as number
	if bindingType is "Perfect Binding" then
		set spineSize to (((numPages / 2) * pageweight) + 0.031)
		set coverWidth to (spineSize + (pageWidth * 2))
		set frameT to 0.5
		set frameL to (coverWidth / 2) - (spineSize / 2)
		set frameB to pageHeight - 0.5
		set frameR to frameL + spineSize
		if numPages is greater than 80 then
			set basePointSize to 40
			set minPointSize to 10
			set maxPointSize to 40
			
			set pointsize to ((basePointSize * spineSize) / 2) * 2
			if pointsize is less than minPointSize then
				set pointsize to minPointSize
			else if pointsize is greater than maxPointSize then
				set pointsize to maxPointSize
			end if
		else
			set pointsize to 0
		end if
	else if bindingType is "Saddle Stitch" then
		set coverWidth to pageWidth * 2
		set spineSize to 0
	end if
	
	
	set  to text returned of (display dialog "coverWidth")
end tell

I assume you want the coverWidth returned in a dialog. There is no cover height calculated in what you’ve given.

set numPages to text returned of (display dialog "Enter number of pages:" default answer 100) as number
if (numPages mod 4) is not equal to 0 then
	error "The number of pages must be divisible by 4."
else if (numPages is less than 4) or (numPages is greater than 532) then
	error "The number of pages must be between 4 and 532."
else if (numPages is less than 44) then
	set bindingType to "Saddle Stitch"
else if (numPages is greater than 40) and (numPages is less than 84) then
	set bindingType to button returned of (display dialog "Please choose a binding type:" buttons {"Saddle Stitch", "Perfect Binding"})
else if (numPages is greater than 80) then
	set bindingType to "Perfect Binding"
end if
set pageWidth to text returned of (display dialog "Enter page width in inches:" default answer 8.375) as number
set pageHeight to text returned of (display dialog "Enter page height in inches:" default answer 10.875) as number
set pageweight to text returned of (display dialog "Enter paper weight of text pages in decimal." & return & "Standard text (50# Williamsburg)= .0039" & return & "Gusto 70# Satin =  .0035" & return & "Gusto 70# Gloss = .0032" default answer 0.0039) as number
if bindingType is "Perfect Binding" then
	set spineSize to (((numPages / 2) * pageweight) + 0.031)
	set coverWidth to (spineSize + (pageWidth * 2))
	set frameT to 0.5
	set frameL to (coverWidth / 2) - (spineSize / 2)
	set frameB to pageHeight - 0.5
	set frameR to frameL + spineSize
	if numPages is greater than 80 then
		set basePointSize to 40
		set minPointSize to 10
		set maxPointSize to 40
		
		set pointsize to ((basePointSize * spineSize) / 2) * 2
		if pointsize is less than minPointSize then
			set pointsize to minPointSize
		else if pointsize is greater than maxPointSize then
			set pointsize to maxPointSize
		end if
	else
		set pointsize to 0
	end if
else if bindingType is "Saddle Stitch" then
	set coverWidth to pageWidth * 2
	set spineSize to 0
end if
display dialog "Cover Width = " & coverWidth