Xiaoqiang's mother bought back 128 mangoes, 8 mangoes in each box, and 4 boxes in a carton. How many boxes are needed to pack all these mangoes into cartons?
小强妈妈买回128个芒果，每一盒装8个芒果，每4盒装一纸箱．把这些芒果全部装到纸箱，需要多少只箱子？
<gadget id="calculator">128 / 8 / 4</gadget>
<output>4</output>

<result>4</result>