A pen is 9 yuan, and the price of a schoolbag is 8 times the price of the pen. How much is a schoolbag?
一支钢笔9元，一个书包的价钱是钢笔价钱的8倍，一个书包多少钱？
<gadget id="calculator">9 * 8</gadget>
<output>72</output>

<result>72</result>