It costs 520 yuan to buy a set of clothes. The price of the jacket is three times that of the trousers. What is the price of the trousers?
买一套服装一共用去520元，上衣的价钱是裤子的3倍，则裤子的价钱为多少元
<gadget id="calculator">1 + 3</gadget>
<output>4</output>

<gadget id="calculator">520 / 4</gadget>
<output>130</output>

<result>130</result>