If I calculate and not enough with my expenses. I just have to save it doesn't can tell with an event that would occur, for example, requires a lot of money to the illness or to repair that occurred in the month.
If I then calculated Not enough to pay my bills. I had to save it, can not tell if this event occurs. Like to spend money with illness. Or Repair That occurred in
If I calculate. Enough with my cost. I must save it cannot tell events to happen. Such as the need to use with the illness, or car repair occurred in a month.