Rounding Problems in Condition Types in PO

Dear All,

I am using a Condition Type "LC Opening Charges"

System Currency : PKR

Document Currency : USD

Exchange rate is : 75 Pkr = 1 USD

i have entered 4000 PKR in Condition type. System automatically converts it into 53.33 USD. At the time of MIGO system once again multiply it with 75 and hit the Accounts with the Amonut "3999.75 PKR" it should be 4000 PKR.

Kindly guide me how to correct this.

Currenty m using 2 decimal places.

cheers