A football is 42.80 yuan, and a basketball is 52.90 yuan. How much is it cheaper to buy a soccer ball than a basketball?
一个足球42.80元，一个篮球52.90元．买一个足球比买一个篮球便宜多少钱？
<gadget id="calculator">52.9 - 42.8</gadget>
<output>10.1</output>

<result>10.1</result>