VBScript Error – Overflow

Any suggestions would be great!

I receive the following error:
THIS IS THE MESSAGE I GET!

Microsoft VBScript runtime error ‘800a0006’

Overflow

/ex/reporting/reports/writeBedding.asp, line 273

Here is line 273…
lastYearSealyPercent = CDbl(CDbl(lastYearSealyUnits) / CDbl(totalUnits) *
100.0)