#### Answer

$9.0\times10^{-4}$

#### Work Step by Step

Using scientific notation and the laws of exponents, the given expression, $
\dfrac{(0.0024)(0.00012)}{0.00032}
$, simplifies to
\begin{array}{l}
\dfrac{(2.4\times10^{-3})(1.2\times10^{-4})}{3.2\times10^{-4}}
\\\\=
(2.4)(1.2)\div3.2\times10^{-3+(-4)-(-4)}
\\\\=
0.9\times10^{-3-4+4}
\\\\=
0.9\times10^{-3}
\\\\=
9.0\times10^{-4}
.\end{array}