问题如下：
PZ company leases a machine for its own use for 6 years with $3000 paid annually, interest rate is 8%, under operating lease, present value of lease payment is:
选项：
A.$15,787
B.$12,878
C.$13,869
解释：
Answer is C, present value of lease payment = leased asset=lease liability, N=6, I/Y=8, PMT=3000, FV=0, CPT PV=-13,869.
Answer is C, present value of lease payment = leased asset=lease liability, N=6, I/Y=8, PMT=3000, FV=0, CPT PV=-13,869.
这个 FV=0 该怎么理解呢？是说我有一份 lease，我知道第六年到期后我的合约结束了，就不用再付钱了，那时候就是 0 是么？
