The school spent 420 yuan to buy basketball, and the money spent to buy football was three times that of basketball. How much did it cost to buy football?
学校买篮球用去420元，买足球用去的钱是篮球的3倍，买足球用去了多少元？
<gadget id="calculator">420 * 3</gadget>
<output>1_260</output>

<result>1_260</result>