basketball is 8.40 yuan, a football is 24.80 yuan. The physical education teacher at the school brought 200 yuan to buy 12 basketballs first, and the rest of the money to buy footballs. How many footballs can he buy?
一只篮球8.40元，一只足球24.80元．学校体育老师带了200元，先买了12只篮球，剩下的钱买足球，还能买多少只足球？
<gadget id="calculator">12 * 8.4</gadget>
<output>100.8</output>

<gadget id="calculator">200 - 100.8</gadget>
<output>99.2</output>

<gadget id="calculator">99.2 / 24.8</gadget>
<output>4</output>

<result>4</result>