To solve this expression, we first need to convert the mixed numbers to improper fractions:

16 10/13 = (13*16 + 10)/13 = 218/13
3 3/13 = (13*3 + 3)/13 = 42/13

Now we can substitute these values back into the expression:

218/13 + 42/13 - 8*12.5%

Next, we need to convert 12.5% to a decimal:

12.5% = 0.125

Now we can substitute this back into the expression:

218/13 + 42/13 - 8*0.125

Now we can simplify the expression:

218/13 + 42/13 - 1

Combining the fractions:

(218 + 42)/13 - 1
260/13 - 1
20 - 1
19

Therefore, the final answer is 19.