A jacket is 55 yuan, and a pair of trousers is 35 yuan. How much does it cost to buy 10 sets of these clothes?
一件上衣55元，一条裤子35元，买10套这样的衣服，一共要花多少元．
<gadget id="calculator">55 + 35</gadget>
<output>90</output>

<gadget id="calculator">90 * 10</gadget>
<output>900</output>

<result>900</result>