Given, a garment factory produced shirts = 216315 ...(0.25 marks)
Produced trousers = 182736 ...(0.25 marks)
Produced jackets = 58704 ...(0.25 marks)
Total production of all the three items in that year = Sum of all items = 216315+182736 + 58704 = 457755 ...(1 mark)
Hence, the total production of all the three items in that year is 457755. ...(0.25 marks)