The store sells 8 boxes of glasses, each box contains 9 glasses, and the total income is 648 yuan. How much is each glass?
商店卖出8箱玻璃杯，每箱有9个杯子，一共收入648元，每个玻璃杯多少钱？
<gadget id="calculator">9 * 8</gadget>
<output>72</output>

<gadget id="calculator">648 / 72</gadget>
<output>9</output>

<result>9</result>