Distribute 15 pieces of candy to 4 children. Each child gets a different amount. The child who gets the most candy can share as many pieces as possible.
15块糖果分给4个小朋友，每个小朋友分得数量不一样，分得最多的小朋友可以分多少块．
<gadget id="calculator">1 + 2 + 3</gadget>
<output>6</output>

<gadget id="calculator">15 - 6</gadget>
<output>9</output>

<result>9</result>