Known: (1/(A))+(1/(B))+(1/(C))+(1/(D))=(35/36), and each of A, B, C, and D Not the same, what is the sum of the four numbers A, B, C, and D?
已知：(1/(A))+(1/(B))+(1/(C))+(1/(D))=(35/36)，且A、B、C、D各不相同，A、B、C、D四数的和为多少．
<gadget id="calculator">2 + 4 + 6 + 18</gadget>
<output>30</output>

<result>30</result>