For example, (1/150)=(1/(A))+(1/(B))+(1/(C)), and A, B, and C are three different three-digit numbers, then A What is the smallest three-digit number among , B, and C?
如(1/150)=(1/(A))+(1/(B))+(1/(C))，又知A、B、C分别为三个不同的三位数，那么A、B、C中最小的一个三位数是多少．
<result>300</result>