Project - Incorrect decimal values while generation invoice

Summary:

Hi Team ,

This is regarding decimals issues, client highlighted that invoice value is not matching with hours, Rate with total amount. Could you please provide the solution where it went wrong. and we have attached the sample document for your reference.

we changed the currencies precision. Search>manage currencies > USD.

As per Oracle instructions , we checked with  Precision value from 2 to 0 and 3. and generate the invoice but this time also we didn't get the expected value.

 Ex: 

we changed the precision value 2 (2 is already exist in system ) to 0. we get the rounded value.  

case 1: 

70.4(billable Hrs)  *  $34.77 (Rate)

expected value : 2,447.81