[Pension --> How long do you have to live to get your money back?]

One year: 1400×12=16800,

Twenty years: 16800×20=336000,

Plus 20 years of interest: 100000,

Total: 436000

2200 per month in retirement,

2200×12=26400 per year,

436000/26400=16.51515152,

It will take about 17 years to get your money back,

which means you will get your money back at 63+17=80 years old.