The school bought 9 boxes of colored chalks and 37 boxes of white chalks. If the white chalks are 8 times the color chalks, how many boxes of white chalks do you need to buy?
学校买了9盒彩色粉笔、37盒白色粉笔，要使白色粉笔是彩色粉笔的8倍，需要再买白粉笔多少盒
<gadget id="calculator">9 * 8</gadget>
<output>72</output>

<gadget id="calculator">72 - 37</gadget>
<output>35</output>

<result>35</result>