Distribute 38 pears to 7 children. If the number of pears distributed to each child is different, then what is the maximum number of pears that can be distributed.
把38个梨分给7个小朋友，如果每个小朋友分得的个数都不一样，那么，最多能分得的个数是多少个．
<gadget id="calculator">1 + 2 + 3 + 4 + 5 + 6</gadget>
<output>21</output>

<gadget id="calculator">38 - 21</gadget>
<output>17</output>

<result>17</result>