Calculating the expression given:

(68, 1/2 - 8 17/20 + 2.02) + 2.75 * 1.6

Step 1: Convert mixed numbers to improper fractions
= (137/2 - 177/10 + 2.02) + 2.75 * 1.6

Step 2: Find the common denominator
= (1370/20 - 354/20 + 2.02) + 2.75 1.6
= (1016/20 + 2.02) + 2.75 1.6

Step 3: Simplify the fractions
= (50/1 + 2.02) + 2.75 * 1.6
= 50 + 2.02 + 4.4

Step 4: Perform multiplication and addition
= 52.02 + 4.4
= 56.42

Therefore, the result of the calculation is 56.42.