My math keeps coming up incorrect, please assist with the solution on how you came up with your answer.

Crane Company purchased machinery on January 1 at a list price of $320000, with credit terms 4/10, n/30. Payment was made within the discount period. Crane paid $91000 sales tax on the machinery, and paid installation charges of $4000. Prior to installation, Crane paid $12100 to pour a concrete slab on which to place the machinery. What is the total cost of the new machinery