Distribute a pile of apples to 5 children. Each child can get an apple, and the number of apples distributed is different. How many apples are there at least in this pile?
把一堆苹果分给5个小朋友，每个小朋友都能分到苹果，而且分到的个数各不相同，这堆苹果至少多少个．
<gadget id="calculator">1 + 2 + 3 + 4 + 5</gadget>
<output>15</output>

<result>15</result>