The answer would be 353.6
6 to the third power (or 6 times 6 times 6) would come out to be 216.
You'd then add 216 and 5 to get 221.
The next step would be to add 8 to 1/5 and get 1.6.
The final step would be to multiply 1.6 and 221 which would give you 353.6.