5(1/5)^2 como la resulevo se que el resultado es 0,2 pere no se el procedimiento

$${\mathtt{5}}{\mathtt{\,\times\,}}{\left({\frac{{\mathtt{1}}}{{\mathtt{5}}}}\right)}^{{\mathtt{2}}}$$ = $${\mathtt{5}}{\mathtt{\,\times\,}}\left({\frac{{{\mathtt{1}}}^{{\mathtt{2}}}}{{{\mathtt{5}}}^{{\mathtt{2}}}}}\right)$$ = $${\mathtt{5}}{\mathtt{\,\times\,}}\left({\frac{{\mathtt{1}}}{{\mathtt{25}}}}\right)$$ = $${\frac{{\mathtt{5}}}{{\mathtt{25}}}}$$ = $${\frac{{\mathtt{1}}}{{\mathtt{5}}}}$$ = 0,2