Hongqi Primary School bought back 10 boxes of chalk, 36 boxes in each box, half of which were used up, how many boxes are left?
红旗小学买回10箱粉笔，每箱36盒，用去了一半，还剩下多少盒？
<gadget id="calculator">10 / 2</gadget>
<output>5</output>

<gadget id="calculator">36 * 5</gadget>
<output>180</output>

<result>180</result>