MC Qu$.21$ Ruff Wear expects sales of $$560,$dots

Ruff Wear expects sales of $$560,$$$650,$$$670,$ and $$610$ for the months of May through August, respectively. The firm collects $20\%$ of sales in the month of sale, $70\%$ in the month following the month of sale, and $8\%$ in the second month following the month of sale. The remaining $2\%$ of sales is never collected. How much money does the firm expect to collect in the month of August?

Multiple Choice

$$628$

$$621$

$$633$