Kate Bwalya wishes to retire in 30 years time and has estimated that she will require a monthly pension income of K24,000 per month for 20 years subsequent to retirement. Kate will contribute to a retirement fund which will enable her to take out a monthly pension of K24,000 after retirement. The retirement fund is currently earning a return of 9% per annum, interest compounded monthly, and this level is expected to remain unchanged and to be sustainable over the next 50 years. Determine the monthly contribution that Kate is required to make to the retirement fund over the next 30 years.