I need help understanding how to solve the problem.

Rundle Boat Company makes inexpensive aluminum fishing boats. Production is seasonal, with considerable activity occurring in the spring and summer. Sales and production tend to decline in the fall and winter months. During 2019, the high point in activity occurred in June when it produced 206 boats at a total cost of $154,400. The low point in production occurred in January when it produced 36 boats at a total cost of $49,000. Required a. Use the high-low method to estimate the amount of fixed cost incurred each month by Rundle Boat Company. b. Determine the total estimated cost if 160 boats are made. a. Fixed cost b. Total estimated cost