Answer
$2,000$
Work Step by Step
RECALL:
(i) Scientific notation has the form $a(10^n)$, where $1 \le a \lt 10$ and where $n$ is an integer.
(ii) $a^m \cdot a^n = a^{m+n}$
(iii) $a^0=1, a\ne 0$
(iv) $\frac{a^{m}}{a^{n}}=a^{m-n}$
Write each number in scientific notation to obtain:
$=\dfrac{5.6(10^{-3})}{2.8(10^{-6})}$
Divide $5.6$ and $2.8$ together, and then divide the powers of 10 together to obtain:
$=\dfrac{5.6}{2.8} \cdot \dfrac{10^{-3}}{10^{-6}}
\\=2 \cdot 10^{-3-(-6)}
\\=2 \cdot 10^{-3+6}
\\=2 \cdot 10^3
\\=2 \cdot 1000
\\=2,000$
