how much more does 1000 earn in eight years compounded daily at 5% than $1000 over eight years at 5% compounded semiannually?

compounded daily it will grow to

1000(1+0.05/365)^(365*8)

compounded 6 monthly it will grow to 

1000(1+0.05/2)^(2*8)

you can do the rest