This problem can simply be expressed in an equation. Let's say that x is the amount of sales that is being looked for here. So our equation will be 0.03x = 180. So to put it simply, the amount of sales (x) has to be multiplied by 0.03 in order to get 180. So to solve for x, all we have to do now is divide 180 by 0.03. If we do that, we will be able to get a final answer of 6,000. So we can conclude that the total amount of sales received by the salesperson is 6,000.