Rewrite using standard notation : 38.1 x 10^-3
0.0381 would be standard notation. You just move the decimal three places to the right, which makes it negative.
\(38.1\cdot10^{-3}=38.1\cdot\dfrac{1}{10^3}=38.1\dfrac{1}{1000}=38.1\cdot0.001=0.0381\)\(Used:a^{-n}=\dfrac{1}{a^n}\)
