Teacher Li went to the store to buy balls. He bought 7 footballs and 4 basketballs. The total cost was 403.2 yuan. It is known that each football is 28 yuan. How much is each basketball? (column equation solution)
李老师到商店买球，买7个足球4个篮球，一共花去了403.2元，已知每个足球28元，每个篮球多少元？(列方程解答)
<gadget id="calculator">7 * 28</gadget>
<output>196</output>

<gadget id="calculator">403.2 - 196</gadget>
<output>207.2</output>

<gadget id="calculator">207.2 / 4</gadget>
<output>51.8</output>

<result>51.8</result>