Retirement tax questions

@DawnC 

 

If I enter 1099-R as received box 2a zero, taxable not determined,
TurboTax says my tax is zero.
If I enter 1099-R with 165552 in box 2a, taxable amount not determined.
I get a taxable amount of 79,552.

which is 165,552 - 43,000 - 43,000