Evaluate
-\frac{2499999999999999999999999}{100000000000000000000000}\approx -25
Factor
-\frac{2499999999999999999999999}{100000000000000000000000} = -25\frac{436207616}{0.9999999999999998 \times 10^{23}} = -25.000000000000004
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\frac{1}{100000000000000000000000}-25
Calculate 10 to the power of -23 and get \frac{1}{100000000000000000000000}.
-\frac{2499999999999999999999999}{100000000000000000000000}
Subtract 25 from \frac{1}{100000000000000000000000} to get -\frac{2499999999999999999999999}{100000000000000000000000}.
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