Distribute a pile of pears to 5 children, so that each child can get a pear, and each child gets a different number of pears, then how many pears are there at least in this pile?
将一堆梨分给5个小朋友，要使每个小朋友都能分到梨，而且每个小朋友分到的梨的个数不同，那么，这堆梨至少有多少个？
<gadget id="calculator">1 + 2 + 3 + 4 + 5</gadget>
<output>15</output>

<result>15</result>