I find it hard to keep numbers in mind, and memorizing huge lists of numbers doesn’t work well for me. I need a purpose, a story, a reason behind the numbers. I’m the weirdo who loves story problems.
I don’t like busywork, running meaningless numbers for the sake of doing it is dull to me.
The numbers start blinking in and out, yes! This is why I have to write out the numbers on the most simple stuff, and write a d rewrite complex problems to keep track of how the numbers change and which ones go where.