Distribute a batch of apples to two classes of kindergarten size, with an average of 3 apples per person; if it is only distributed to the big class, each person can be divided into 4 apples; if it is only distributed to the small class, how many apples can each person get.
把一批苹果分给幼儿园大小两个班，平均每人分3个；如果只分给大班，每人可分4个，如果只分给小班，每人可分多少个．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/3) - (1/4)</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">1 / (1/12)</gadget>
<output>12</output>

<result>12</result>