A pair of trousers is 45 yuan, and the price of the jacket is twice that of the trousers. How much does it cost to buy a set of such clothes?
一条裤子45元，上衣的价格是裤子的2倍，买一套这样的衣服要多少元钱？
<gadget id="calculator">45 * 2</gadget>
<output>90</output>

<gadget id="calculator">90 + 45</gadget>
<output>135</output>

<result>135</result>