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