In using the 2's-complement system of subtraction, a negative number in the subtrahend would ultimately be changed to:

If we are to use the 2's-complement system of subtraction, in the long run, a negative number in the subtrahend would be changed to a positive number in true binary form. The advantage of the 2's-complement system is that the fundamental arithmetic operations are similar to those for unsigned binary numbers.

answer; the inspector may have found some violation that could cause death or some kind of serious injury;

it's actually a very difficult task, due to not many people can make 2 million dollars in 2 years. besides that, to the not-so-realistic ideas, you can create a business. it could be practically anything, but make it into a business that isn't that known yet, you get me? also, lets not forget about stock market. that's where all the good stuff happens. use investments at the beginning and begin to raise up your business or whatever you're going to do. as this is a very non-realistic idea, it's still worth the shot!