The school spent 360 yuan more to buy basketball than to buy football. Among them, I bought 15 basketballs, 68 yuan each; I bought 12 footballs, how much each? (Solve first with arithmetic, then with equations)
学校买篮球比买足球多用去360元．其中篮球买了15个，每个68元；足球买了12个，每个多少元？(先用算术方法解，再用方程解)
<gadget id="calculator">15 * 68</gadget>
<output>1_020</output>

<gadget id="calculator">1_020 - 360</gadget>
<output>660</output>

<gadget id="calculator">660 / 12</gadget>
<output>55</output>

<result>55</result>