EXCEL: Calculation is wrong, Rounding wrong : for som reason excel doesn't calculate correctly:

Calculation = 4642,83 * (60,13-60,08) / 66,84 = 3,47...

Excel = 3,40.

It is really important that i calculates directly because it will be rounded. The first one is rounded to 4. the second one is rounded to 3 which is a big difference in my calculation.

Anyone knows how to fix this?

Thanks in advance