answer is not .99%

Annuity due. Reginald is about to lease an apartment for 24 months. The landlord wants him to make the lease payments at the start of the month. The monthly payments are $1,000 per month. The landlord says he will allow Reg to prepay the rent for the entire lease with a discount. The one-time payment due at the beginning of the lease is $21.456. What is the implied monthly discount rate for the rent? If Reg is earning 1.5% on his savings monthly, should he pay by month or make the one-time payment? What is the implled monthly discount rate for the rent