What is my gross profit:

Gross sales $-600,000$

Sales returns & allowances $-20,000$

Sales discounts $-13,000$

Cost of transportation in $-22,000$

Operating expenses $-50,000$

Merchandise inventory $($beginning of period$)-98,000$

Invoice cost of merchandise purchases $-360,000$

Purchases discounts received $-9,000$

Purchases returns and allowances $-11,000$

Merchandise inventory $($end of period$)-84,000$