Buy 4 identical basketballs, pay 100 yuan, get back 4 yuan, how much is each basketball?
买4个同样的篮球，付了100元，找回4元，每个蓝球多少元？
<gadget id="calculator">100 - 4</gadget>
<output>96</output>

<gadget id="calculator">96 / 4</gadget>
<output>24</output>

<result>24</result>