A pair of trousers is 30 yuan, and the price of a piece of clothing is four times that of a pair of trousers. How much does this outfit cost?
一条裤子30元，一件衣服的价钱是一条裤子的4倍．这套服装共需要多少钱？
<gadget id="calculator">30 * 4</gadget>
<output>120</output>

<gadget id="calculator">30 + 120</gadget>
<output>150</output>

<result>150</result>