Clarissa had 72 candy bars to sell. She sold 4 per day for 8 days. She ordered 15 more candy bars to share with her 3 friends. The following expression can be used to find the number of candy bars Clarissa had left.



72 – 4 • 8 – 15 ÷ 3



Based on this expression, how many candy bars did Clarissa have left?