A pair of trousers is 128 yuan, and the price of a top is four times that of a pair of trousers. How much does it cost to buy such a set of clothes?
一条裤子128元，一件上衣的价钱是一条裤子的4倍，买这样的一套衣服需要多少钱？
<gadget id="calculator">128 * 4</gadget>
<output>512</output>

<gadget id="calculator">512 + 128</gadget>
<output>640</output>

<result>640</result>