Question

Simplify ${\left\{{\left(\frac{3}{5}\right)}^3\right\}}^2+{\left(\frac{3}{5}\right)}^{-2}\times 5^{-1}\times \left(\frac{5}{30}\right)$

Answer 1

$={\left\{{\left(\frac{3}{5}\right)}^3\right\}}^2+{\left(\frac{3}{5}\right)}^{-2}\ast 5^{-1}\ast \frac{5}{30}$

$=1838265625+2.7\ast 0.2\ast 0.16$

$=1838265627.2\ast 0.2\ast 0.16$

$=367653125.44\ast 0.16$

$=58824500.0704$