1999*2000-1/1998+1999*2000 * 7/5
= 3998000 - \(\frac{1}{1998}\)+ 3998000 x \(\frac{7}{5}\)
= 3998000 - \(\frac{1}{1998}\)+ 5597200
= 3997999.999 + 5597200
= 9595199.999
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