Solve for n
n=0
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n\times 406=n
Divide n\times 243600 by 600 to get n\times 406.
n\times 406-n=0
Subtract n from both sides.
405n=0
Combine n\times 406 and -n to get 405n.
n=0
Product of two numbers is equal to 0 if at least one of them is 0. Since 405 is not equal to 0, n must be equal to 0.
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