Calculate: (8.6 \times 10^5) \times (4 \times 10^{-4})

Expression: $\left( 8.6 \times {10}^{5} \right) \times \left( 4 \times {10}^{-4} \right)$

Remove unnecessary parentheses

$8.6 \times {10}^{5} \times \left( 4 \times {10}^{-4} \right)$

Remove unnecessary parentheses

$8.6 \times {10}^{5} \times 4 \times {10}^{-4}$

Calculate the product

$344$