Currency in decimals and the sum is wrong, complex formula

Hi guys,
Please help!!!!

I tried to find the solution for my problem but one of the previous examples explained quite a simple formula and mine is a bit complicated.

Input: =IF(F12<>"",(IFERROR((G12/VLOOKUP(F12,$G$3:$H$9,2,FALSE)),"Input XR")),"")

Where exactly should I insert the Round option as it's been the whole day I was trying to solve the mystery of the sum that was coming incorrect in one hundredth part of number

Instead of 886.32 I get 886,31 and therefore it comes in red at the bottom of the worksheet.

Thanks very much in advance for any suggestion!

I don't see a "sum" formula anywhere. Moreover, the posted formula (in column G) causes a circular reference warning. Presumably, G3:H9 is in a different worksheet (workbook?), which you did not include. But for demonstration purpose, you should explicitly round as follows:

=IF(F12<>"",IFERROR(ROUND(G12/VLOOKUP(F12,$G$3:$H$9,2,FALSE), 2),"Input XR"),"")

and

=ROUND(SUM(G2:G17), 2)

Even though the first round ensures that each value has only 2 decimal places, the second round is prudent in order to avoid anomalies of binary floating-point arithmetic.