Synthetic division problem

$1800

Step-by-step explanation:

To find the amount of commission she earns, we multiply the amount of sales by the percent of the commission.

She earns 11.5% commission; 11.5% = 11.5/100 = 0.115.

Let x be the unknown amount of sales.  This gives us 0.115x.

Since the commission equals $207, this gives us the equation

0.115x = 207

Divide each side by 0.115:

0.115x/0.115 = 207/0.115

x = 1800