Please solve this question $4$

Q4) Martin Technological Products Factory produces 4 types of products: "smart phone", "mobile phone", "cordless phone" and "wired phone". At the end of 2023, planning is being made for these four products. The estimated product mix, sales amount, unit sales price and variable costs per unit for these 4 products in 2024 are as follows: Unit Selling Price PRODUCT Smart Phone Mobile Phone Cordless Phone Wired Phone PRODUCT MIX 35% 10% 15% \ S ($/unit) 5,000 500 400 100 Unit Variable Cost ($/unit) 2,000 80 50 20 Total fixed costs for 2024 is estimated as $2,488,000. Required: a) Provided that the sales mix mentioned above is not changed, what is the break-even point sales quantity for each product? b) What would be the profit at the sales level mentioned above? c) How many units of each product must be sold to earn a profit of $800,000?