Answer
$0.0000000208$
Work Step by Step
RECALL:
To convert a number in scientific notation, $a \times 10^{n}$, to decimal notation, you move the decimal point:
(i) $|n|$ places to the left if $n$ is negative; or
(ii) $|n$ places to the right if $n$ is positive
The given number in scientific notation has $n=-8$.
Thus, move the decimal point 8 places to the left to have:
$2.08 \times 10^{-8} = 0.0000000208$
