Hi, Could you please help me with this exercise? I am unsure as to how you work these out (formula)? Can you please work these out, but more importantly, show HOW you did it? Thank you so much

2. Happy Toys makes wooden train sets, which it sells for $65 each. It has xed costs of $80,000 per year and variable costs per unit of $27. a. What is Happy Toys contribution margin per train set? b. Calculate the number of train sets Happy Toys must make and sell in order to break even. c. Happy Toys has a target profit of $85,000 for the year. How many train sets does Happy Toys have to sell in order to gain this profit