A jacket is 52 yuan, and the price of the jacket is four times that of the trousers. How much is a jacket more expensive than a pair of trousers?
一件上衣52元，上衣的价钱是裤子的4倍，一件上衣比一条裤子贵多少元？
<gadget id="calculator">52 / 4</gadget>
<output>13</output>

<gadget id="calculator">52 - 13</gadget>
<output>39</output>

<result>39</result>