Answer:
See the attached formula (the "n" means number of years):
We know principal = $600,000 rate = .055 and "n" = 20
Annual Payout = Principal * rate * (1 +r)^n / [(1 + rate)^n -1]
Annual Payout = 600,000 * .055 * (1.055)^20 / [{(1.055)^20}-1]
Annual Payout = 600,000 * .055 * 2.9177574906 / 1.9177574906
Annual Payout = 96,286.00 / 1.9177574906
Annual Payout = 50,207.60
To get a monthly payout we divide by 12 and get:
4,183.97 per month
Source: https://www.1728.org/annupay2.htm (formulas)
https://www.1728.org/annupay.htm (calculator)
Step-by-step explanation: