please do it in detail

2019 Part C JT Construction Berhad has entered into a contract beginning 1 January 2018, to build a parking complex. It has been estimated that the complex will cost RM600,000 and will take 3 years to construct. The complex will be billed to the purchasing company at RM900,000. The following data pertain to the construction period. 2018 2020 RM RM RM Cost to date 270,000 420,000 600,000 Estimated costs to complete 330,000 180,000 Progress billings to date 270.000 550.000 900,000 Cash collected to date 240,000 500,000 900,000 It is the company policy to compute the stage of completion based on input method (proportion of contract costs incurred). Required: a) Compute the gross profit that would be recognised during each year of the construction period. (6 marks)