Question

Solve :
$0.007÷20000$

Answer 1

$0.007÷20000$

$\Rightarrow (7\times 0.001)÷(2\times 10000)$

$\Rightarrow (7\times {10}^{-3})÷(2\times {10}^4)$

$\Rightarrow \left(\frac{7}{2}\right)\times \left(\frac{{10}^{-3}}{{10}^4}\right)$

$\Rightarrow \left(3.5\right)\times {10}^{-3-4}$

$\Rightarrow \left(3.5\right)\times {10}^{-7}$.