Math Problem Solver

$$300 + 6.4=306.4=\frac{1532}{5}$$

$$\begin{aligned} \mathtt{3}\mathtt{0}\mathtt{0}&\mathtt{.}\mathtt{0}\\ \mathtt{+\phantom{0}}\phantom{0}\phantom{0}\mathtt{6}&\mathtt{.}\mathtt{4}\\ \hline \mathtt{3}\mathtt{0}\mathtt{6}&\mathtt{.}\mathtt{4} \end{aligned}$$

$4$ is the digit in the $10^{-1}$ place. $0 \times 10^{-1} + 4 \times 10^{-1} = 4 \times 10^{-1}$.

$6$ is the digit in the $10^{0}$ place. $0 \times 10^{0} + 6 \times 10^{0} = 6 \times 10^{0}$.

$0$ is the digit in the $10^{1}$ place. $0 \times 10^{1} + 0 \times 10^{1} = 0 \times 10^{1}$.

$3$ is the digit in the $10^{2}$ place. $3 \times 10^{2} + 0 \times 10^{2} = 3 \times 10^{2}$.