Evaluate
\frac{18}{e^{3}}\approx 0.896167231
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0.02\times 900e^{-0.1\times 30}
Calculate 30 to the power of 2 and get 900.
18e^{-0.1\times 30}
Multiply 0.02 and 900 to get 18.
18e^{-3}
Multiply -0.1 and 30 to get -3.
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