Question 882419
First you need to solve 9^2 which is 9*9=81
81*18^4/3^16
next you need to solve 18^4 which is 18*18*18*18=104976
so 81*104976/3^16

figure out 81*104976 which equals 8503056.
the next step is to figure out 3^16
this is multiplying the number 3 sixteen times.
This equals 43046721
so it's 8503056/43046721
this simplifies to 16/81. 

=16/81 or decimal form is .197530864197