Wang Hui has 26.85 yuan, and Zhang Yong has 15.3 yuan. The difference between the two of them is 8.9 yuan to buy a football. How much is a football?
王辉有26.85元，张勇有15.3元，两人的钱合起来买一个足球还差8.9元，一个足球多少元？
<gadget id="calculator">26.85 + 15.3 + 8.9</gadget>
<output>51.05</output>

<result>51.05</result>