please give explanation and step or will downvote

Lee Limited produces handmade handbags. Cost of the production are as follows: Each handbag is sold for $7,000. Lee produced and sold 140 handbags in the year ended 31 December 20x0. Required: (a) Calculate the contribution margin per unit for Lee and the breakeven point (8 marks) (in terms of unit and dollar). (b) Lee is considering renting a new machine for production. The new (12 marks) machine costs and annual fixed cost of $270,000 per year and it can save direct labour cost of $250 and direct material cost of $100 for each handbag. Such implementation can increase the units of production to 220 units per year and all products could be sold. Advise whether Lee limited should rent the new machine