The shopping mall shipped 480 pairs of sports shoes, which were packed in 2 iron boxes, 3 wooden boxes, and 8 cardboard boxes. If there are as many sneakers in 4 cartons as in 1 wooden box; and the sneakers in 3 wooden boxes can just be packed in 2 iron boxes. So how many pairs of sneakers are packed in each iron box.
商场运来480双运动鞋，分别装在2个铁箱、3个木箱、8个纸箱里．如果4个纸箱同1个木箱装的运动鞋一样多；而3个木箱的运动鞋刚好能用2个铁箱装完．那么每个铁箱装运动鞋多少双．
<gadget id="calculator">10 / 3</gadget>
<output>10/3 = around 3.333333</output>

<gadget id="calculator">2 + (10/3)</gadget>
<output>16/3 = around 5.333333</output>

<gadget id="calculator">480 / (16/3)</gadget>
<output>90</output>

<result>90</result>