For a batch of goods, each box contains 36 pieces, and 40 boxes are needed. If each box contains 45 pieces, how many boxes are needed? (Solve with ratio)
一批货物，每箱装36件，需要40个箱子，如果每箱装45件，需要几个箱子？(用比例解)
<gadget id="calculator">2_400 / 24</gadget>
<output>100</output>

<result>100</result>