Beg pardon
A few folks have given you the correct result, which is 13.16 approximately (ignore earlier post).
However for further reference, you may want to know how to do it your self, so below is an easy sheet.
Information most pertinent to your equation,
Fractions
1/2 = .5
2/3 = .666666666666
I tried to make a reasonable columned table, but the forum doesn't support the formatting I used;
Method
1 1/2 = 1+.5 = 1.5
2 = 2 = 2
1 = 1 = 1
1 2/3 = 1+.66 = 1.66
1 = 1 = 1
1 1/2 = 1+.5 = 1.5
1/2 = .5 = .5
2 = 2 = 2
2 = 2 = 2
Sum of each column (since they're the same numerically) is 13.16. So you can use the calculator at whichever step is easiest for you to compute the answer. (Or do it by hand)