Let’s look at a mind that has a stack of all 3 types of thoughts coming at it. Just like before, there are two parts to the mind, a conscious mind (that’s you) that can deal with tricky problems, but also offload simpler (colour sorting) to it’s automatic counterpart.

Just like before, you have a mind split in two. You have a fast, efficient colour sorting mind, but you have to send the coloured thoughts over, while sorting numbers (which may come as digits, or arithmetic problems to solve) for yourself.