please answer question 4 fillyt

Smarty Limited manufactures and sells only one product. The budgeted details for 2022 are as follows. REQUIRED 4.1 Calculate the total marginal income and budgeted net profit (loss) for 2022. 4.2 Calculate the breakeven quantity and value. 4.3 Suppose Smarty Limited wants to make provision for 10% increase in fixed costs and an increase in variable costs by R0.20 per unit. Taking these increases into account, calculate the following: 4.3.1 New breakeven quantity and value. 4.3.2 Safety margin as a percentage. 4.3.3 The number of units that need to be sold to earn a net profit of R850000