QS $4-4($Algo$)$ Computing net invoice amounts LO P$1$

Compute the amount to be paid for each of the four separate invoices assuming that all invoices are paid within the discount period.

$\backslash$table$[[,\backslash$table$[[$Merchandise$],[($gross$)]],$Terms,Payment$],[$a$.,$$$,8,400,\frac{2}{10},\frac{n}{60},],[$b$.,$$$,25,100,\frac{1}{15},\frac{n}{90},],[$c$.,$$$,81,800,\frac{1}{10},\frac{n}{30},],[$d$.,$$$,18,500,\frac{3}{15},\frac{n}{45},]]$