Well, let's write down what we have.
3/8 x 1
5/8 x 2 = 10/8
3/4 x 3 = 9/4 = 18/8
7/8 x 1
1 1/8 (9/8) x 1
1 1/4 (5/4) x 2 = 10/4 = 20/8
Now, we find a common denominator, which is 8.
We have
3/8 + 10/8 + 18/8 + 7/8 + 9/8 + 20/8 = 67/8
We simplify, to get 8 3/8.
Does this make sense?
