Kurumi sat back a bit as numbers and what not were discussed. It was probably best to let the newer students answer these bits, right? Not to mention Kurumi was still a little traumatized from the slight eyebrow raise from answer. Besides, up to now had been mostly review.

Kurumi cocked her head to the side. Two digit numbers? Up until now they had always been told to reduce the numbers to a single digit, but that didn't seem to be the case this time around. Since people were already discussing adding and subtracting the numbers, even combining the meanings, Kurumi opted to think of something else - especially since they had just been discussing PEMAS. "Perhaps," Kurumi said when it was her turn. "You first examine the multiples of the numbers? In this case, 47 is a prime number and can only be divisible by itself and one, so it takes on the meaning of one? Or perhaps the fact that it is a prime number implies something?" She rubbed the back of her neck as she thought some more. "Say we had 45 instead of 47, then perhaps it has the characteristics of 5 and 8?"