Perform calculation in the matrix field

This is the following scenario.

Two amount a=1000 b=75

A matrix 

7 columns x 14 Rows

Code date&time          Qty1          total1      Qty2      Total2       GTotal 

a       mm/dd/yy:8am    0 to 10  a*Qty1   0 to 10      b*qty2    total1+total1 

That's possible. Here's a guide for that: https://www.jotform.com/help/414-Calculate-Values-in-the-Input-Table-Through-Condition

Thanks