please answer on paper

Nadhira is the owner of Naddy's Clothing Store. She is planning to start a sinking fund for her to pay off a debt amounting RM140,000 in 4 years. a. Find the required quarterly payment into the sinking fund if the fund is invested in an account earning 8% per year compounded quarterly. [5 marks] b. Develop a sinking fund schedule for the sinking fund. [15 marks]