A ball is 24 yuan, a football is 85 yuan, Mr. Li bought 12 footballs for 1500 yuan, how many balls can he buy with the remaining money?
一个皮球24元，一个足球85元，李老师1500元钱买了12个足球，剩下的钱能买多少个皮球？
<gadget id="calculator">85 * 12</gadget>
<output>1_020</output>

<gadget id="calculator">1_500 - 1_020</gadget>
<output>480</output>

<gadget id="calculator">480 / 24</gadget>
<output>20</output>

<result>20</result>