I don't understand on this. could anyone help me explain

Sedap Pizza, a local pizza restaurant sells a 12-inch Extravaganza Pizza at a price of RM30.00 each. Cost for one pizza, includes pizza crust and topping estimated at EMISDO each. Sedop Pizza has to pay rental and other fixed costs at RMO, 000 a year. You as a newly recruited accounting manager for Sedap Pizza have been required by the owner to calculate the following: a) Contribution margin per unit and contribution margin ratio. [4 marks} b) Number of unit to break even. {4 marks) c} Sales at break even. [3 marks) a) Number of units to be sold to achieve annual profit of RMO. 000. (3 marks] e} Number of units to be sold to achieve annual profit of RMO, 000 (after tax] with a tax rate of 25%. (4 marks) f) Based on the answer from D, determine the level of sales to achieve in target sales. (2 marks]