Find the square root of $\frac{1}{16}$

Find the value of ${\left(0.3\right)}^3$.

Find the value of ${\left(0.05\right)}^2$

Find the value of ${\left(-9\right)}^2$.

Find the value of ${\left(-7\right)}^2$.

Find the value of ${\left(-0.1\right)}^3$

Find the square root of $2540836$ by division method.