During your retirement you will need $4,000 per month, each month, for 300 months. You plan on retiring 60 months

During your retirement you will need $4,000 per month, each month, for 300 months. You plan on retiring 60 months from today. If your investments earn 6% APR (compounded monthly), must you invest each month, starting next month, for 12months to fully fund your retirement?