For integers x, y, and z, if (3^x) (4^y) (5^z) = 209,715,200,000 and x + y + z = 18, what is the value of xy/z? Choose one:	A) 0	B) 3	C) 5	D) 7	E) 9
The number 209,715,200,000 is not divisible by 3. (We can verify this by adding the digits of the number to see that the sum is not a multiple of 3.)   Thus x = 0 and xy/z = 0.   The answer is 0.
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For integers x, y, and z, if (3^x) (4^y) (5^z) = 209,715,200,000 and x + y + z = 18, what is the value of xy/z?