It is known that m, n, a, and b are all positive integers, and ((n)/(m))=((a)/600)+((b)/700), where (m, n)=1, ( a, 600)=1, (b, 700)=1, then what is the minimum possible value of m.
已知m，n，a，b都是正整数，且((n)/(m))=((a)/600)+((b)/700)，其中(m，n)=1，(a，600)=1，(b，700)=1，那么m的最小可能值是多少．
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