SPP (Pty) Ltd has a February year-end. It signed a contract on 1 January of the current year of assessment. The contract entitles it to the use of a machine for a period of five years. The lease expenditure qualifies for a deduction in terms of s11(a). The contract provides for a once-off lease payment of R600 000, which becomes due and payable on date of signature of contract calculate the prepaid expense deductable