A set of school uniform, jacket 59 yuan, trousers 41 yuan, buy 2 sets, how much is the total cost.
一套校服，上衣59元，裤子41元，购买2套，一共需要多少元．
<gadget id="calculator">59 + 41</gadget>
<output>100</output>

<gadget id="calculator">100 * 2</gadget>
<output>200</output>

<result>200</result>