You could apply the ROUND statement for the sum.

round (sum();2)

I didn't test it.
Let us know.

Ciao Alex.

Stuart wrote:
Here is the data:

C F I J N O
1.17 4.45 2.79 7.24 8.47 8.47
1.23 2.12 2.12 2.61 2.61

7.81

7.81 is the sum of values in col F multiplied by their corresponding
value in col C.
So 7.81 should equal (1.17 * 4.45) + (1.23 * 2.12)
ie 5.2065 + 2.6076 = 7.8141 round to 7.81