A piece of clothing costs 48.6 yuan, and a pair of trousers costs 41.4 yuan. My mother bought a set of clothes for Yu Gang and paid the salesperson 100 yuan. How much should I get back?
一件衣服48.6元，一条裤子41.4元，妈妈给于刚买了一套衣服，付给售货员100元，应找回多少元？
<gadget id="calculator">100 - 90</gadget>
<output>10</output>

<result>10</result>