1099-B capital loss does not match Turbotax calculation

[to1320]

After entering the LT capital loss amount from my 1099-B statement which is $6545, Turbo tax calculates my LT capital loss amount as $4394.  I am not carrying over any capital loss from prior years.  

What am I doing incorrectly?

[MaryK4]

If you had short term capital gains in the current year, they will be offset by long term capital gains first, then the long term loss allowed of $3,000 for the current year will be calculated to determine the carry forward.