How many is 25 minus 1.4 divided by 7 / 9 Xiao Ming has 80 stamps, of which 3 / 4 are Chinese stamps and the rest are foreign stamps. How many more Chinese stamps than foreign stamps?

Original formula = [25 - (14 / 10)] * (9 / 7)
=[(250-14)/10]*(9/7)
=[(250*9)-(14*9)/(10*7)
=(2250-126)/70
=2124/70

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