I am a beginner so try not to laugh too much at my code below. Thanks for your help.
Dim perdiem As Integer 'interest per day'
Dim numdays As Integer 'number of days of interest'
Dim upb2 As Integer 'current balance used to calculate the interest'
Dim intd As Integer 'interest paid to date'
Dim pr_rate As Integer 'rate'
Dim settledate As Integer 'settle date'
Dim interestcalc As Integer 'interest'
For a = 2 To 6500
Worksheets("MLS").Select.Activate
upb2 = Worksheets("MLS").Range("AF2")
pr_rate = Worksheets("MLS").Range("AH2")
perdiem = Application.WorksheetFunction.Product(pr_rate, 0.00003)
intd = Worksheets("MLS").Range("AD2")
Worksheets("Funding Memo").Select.Activate
settledate = Worksheets("Funding Memo").Range("A3")
numdays = Application.WorksheetFunction.Days360(intd, settledate)
interestcalc = CLng(Application.WorksheetFunction.Product(perdiem, numdays, upb2))
Worksheets("MLS").Range("DI2").Select
Selection = interestcalc
Next a
End