"Professor, you said that if you have 11 or 22 or 33 it's special, so what if you havn't finished adding and you have an 11, should you reduce it and add, or keep it and add. Like if I had (8+3)+4, that would be 11+4. So should I break it up to 2+4 or keep it as 11+4? Am I making any sense at all?" Ellie was never too good at explaining things...