The price of a pen is 12 yuan, and the price of a schoolbag is 12 times that. How much is a schoolbag?
一支钢笔的价格是12元，一个书包的价格是它的12倍，一个书包多少钱？
<gadget id="calculator">12 * 12</gadget>
<output>144</output>

<result>144</result>