Breakeven analysis - Hawk Company Produces a single product that sells for $6.00 per unit and has a variable cost of $4.50 per unit. Total fixed costs at Hawk Company are $5.4mllion. In order to earn a pretax target profit that is 10% of sales, how many units must Hawk Company Sell.

I am having difficulty solving this problem if you could help with the formula and how do I find the 10% that would be a huge help. Thanks!