$5^2 + 5^4 + 5^4 + 5^4 + 5^4 = $

$\frac{2^7 \times y^4}{2^5 \times y^3} = $

$3^5 \times 12^4 \times 8^5 \times 2^3 = $

$(1/3)^5 \times 3^3 = $

$\frac{50^3 \times 50}{50^{10} \times 10^{10}} = $

$\frac{3^7 \times 3^5}{4^{10} \times 5^{10}} = $

$5^7 \times 3^4 \times 2^7 \times 3^{10} = $