Teacher Wang goes to the store to buy 5 basketballs and 3 footballs, and it costs 348 yuan. If he buys 3 basketballs and 2 footballs, it costs 216 yuan. How much is a basketball?
王老师到商店去买5个篮球和3个足球，需要348元，如果买3个篮球和2个足球，需要216元，一个篮球多少．
<gadget id="calculator">348 * 2</gadget>
<output>696</output>

<gadget id="calculator">216 * 3</gadget>
<output>648</output>

<gadget id="calculator">696 - 648</gadget>
<output>48</output>

<result>48</result>