It costs 25.5 yuan to buy a piece of clothing, and 2.5 yuan less to buy a pair of trousers. How much does it cost to buy a set?
买一件衣服要25.5元，买一条裤子的价钱比它少2.5元，买一套需要多少元？
<gadget id="calculator">25.5 - 2.5</gadget>
<output>23</output>

<gadget id="calculator">23 + 25.5</gadget>
<output>48.5</output>

<result>48.5</result>