This problem can be solved most easily with a calculator, but faster by regrouping.
There are six 8's, so the problem can be rewritten as:
5 + 3 + 4 + (6 * 8) + 17 + 16 =
5 + (6 * 8) + (17 + 3) + (16 + 4) =
5 + 48 + (20 + 20) =
5 + (48 + 40) =
5 + 88 =
93
