help please

A business produces one product which requires the following inputs: Direct materials Direct labour Building costs Leased machines Stores costs 6 kg @ $4.80 per kg 4 hours @ $7.00 per hour $18,000 per quarter $600 for every 600 units of production $3,000 per quarter plus $3.00 per unit ho i) What is the total cost of production and the cost per unit at each of the following production levels: a) 1,000 units b) 1,500 units c) 2,000 units ii) Explain why the cost per unit is different at each level of production