Evaluate
\frac{1}{100000000000000000000000}= 10^{-23}
Factor
\frac{1}{2 ^ {23} \cdot 5 ^ {23}} = 1.0000000000000002 \times 10^{-23}
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\frac{1}{10^{23}}
Rewrite 10^{10} as 10^{-13}\times 10^{23}. Cancel out 10^{-13} in both numerator and denominator.
\frac{1}{100000000000000000000000}
Calculate 10 to the power of 23 and get 100000000000000000000000.
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