There are 480 boxes of goods at the bus station, and a truck has transported them 5 times, and there are 30 boxes left. How many boxes are shipped each time on average? (column equation solution)
汽车站有480箱货物，一辆货车运了5次，还剩30箱，平均每次运多少箱？(列方程解答)
<gadget id="calculator">480 - 30</gadget>
<output>450</output>

<gadget id="calculator">450 / 5</gadget>
<output>90</output>

<result>90</result>