How did Dave Meyer figure the NOI?

[Ifegwu Sampson Ifegwu]

https://www.youtube.com/watch?v=DHsbGR4zg5Q

If you watch this video and skip to about 11 minutes in. How in the world does he get the numbers for that NOI. Can someone please explain to me if this calculator is broken, or am I too new to real-estate. I've spent all night reading and watching videos on how you accurately calculate NOI and I can't find why his number is that

[Tom Shallcross]

 @Ifegwu Sampson Ifegwu - the calculator is spitting that out based off a 88k loan amount, 30yr amortization and rate of 4.25%.  Adjust any three of those data points and the PMNT amount will also adjust. 

If you want to create your own calculation you can create a table where you enter the loan amount (note that it's not the purchase price) rate and months of payment.  For the Monthly payment cell, the Excel calculation is =PMT(B2/1200,B3,B1).    B2 is the rate, B3 is the # of months and B1 is what you entered for loan amount. 

Loan Amount	$100,000
Annual Rate	4.50%
Number of Payments	360
Monthly Payment	($279.66)