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annual distribution amount = account value / your annuity factor.

Your annuity factor = (1-(1/(1+r)^L)/r
where r= the assumed rate of interest(decimal) and L= your life expectancy.

Please be aware that the formula is ^L (to the power of L) and not *L (multiplied by L) as I originally posted and afterwards corrected after being advised of the proper keyboard convention for exponents (^).

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