The price of a pair of trousers is 138 yuan, and the price of a top is 4 times that of the trousers. How much is the price of this coat?
一件裤子的价格是138元，一件上衣的价格是这条裤子的4倍．这件上衣的价格是多少元？
<gadget id="calculator">138 * 4</gadget>
<output>552</output>

<result>552</result>