So I remember and you can find out, the formula is:
Take the amount in your IRA(s) at the end of the
year before, December 31 and
divide by the number after your age in the chart below.
for instance at the age of 70 the number is 27.4
So for example if your balance at the end of the year
is $100,000 the divide by 27.4 = $3649.64