BRRRR Calc- Total Annual Expenses

[Russell W.]

I have a question regarding how the total annual expenses is calculated using the BP BRRRR calc.

I have used this report generated by another BP member as a sample to review (I've used up my 5 trial ones).  View report

You can see that the Total Annual Expenses comes to $10,328.00 for the first year.  I am coming up with a much higher number based on the expenses shown in the report.  

Here's my math....  
$792.00 for the first 6 months =          $4,752.00
$1,171.76 for the second 6 months = $7,030.56

                                                                  $11,782.56

Now after the refi my understanding is that you would not have a mortgage for the first month.  This would subtract out $379.76 for one month. So new total is:
                                                                  $11,782.56

                                                             -    $     379.76

                                                                   $11,402.80

So you can see I am a long way off from $10,328.00.  I know I'm missing something here... any input would be much appreciated!