Alexander Litvinenko was poisoned with 10 micrograms of the radioactive substance Polonium-210. Since radioactive decay follows a compounded continuously model,
we can determine the amount of substance left in Alexander Litvinenko's body at any
given time. If Polonium-210 has a decay rate of .502%, then determine the amount
of Polonium-210 left in his body after 65 days. Provide 3 decimal places and units in
your answer.