2^2*4^8/16^5*5^2
2^2*4^8/16^5*5^2=
=2^2*(2^2)^8/(2^4)^5*5^2=2^2*2^16/2^20*5^2=2^2*2^16/2^20*5^2=
=2^18 /2^20*5^2=1/2^2*5^2=1/4*25=1/100