We are given different costs in producing the product. In order to determine the total cost, we must get the sum of the total direct/variable costs (for 6,800 units) and the fixed costs.
So,
($6.70 + $3.80 + $1.45 + $0.85 + $0.75)(6,800) + $1.05 + $0.75
= $92,141.80
The total production cost incurred if 6,800 units are produced is $92,141.80.