The kindergarten bought 1 football and 4 small balls, which cost 26 yuan in total, and 10 yuan for a small football. How much is a small ball? How many
幼儿园买了1个足球和4个小皮球，一共花了26元，一个小足球10元．一个小皮球多少钱？多少
<gadget id="calculator">26 - 10</gadget>
<output>16</output>

<gadget id="calculator">16 / 4</gadget>
<output>4</output>

<result>4</result>