A+B/C=10 (A, B, and C are all unequal natural numbers greater than 0). So, what is the maximum value of A*B*C?
A+B/C=10(A、B、C都是大于0的互不相等的自然数)．那么，A*B*C的最大值是多少．
<gadget id="calculator">7 * 9 * 3</gadget>
<output>189</output>

<result>189</result>