Can you solve this general accounting problem using appropriate accounting principles?

Clearview Manufacturing tracked its production costs over several months: . February: 7,800 units, total cost = $11,970 . March: 6,200 units, total cost = $10,260 . April: 8,400 units, total cost = $12,810 . May: 5,900 units, total cost = $9,870 . June: 7,200 units, total cost = $11,370 Compute the variable cost per unit using the high-low method