Woah. This reminds me of a few days in elementary school. My teacher scolded me for not allowing enough room into my calculations.
The book consisted of small ~5 mm squares and I did a number/character in every square and only left two squares in between calculations and one row in between rows of calculations.
At that time, my numbers were adequately proportionally made towards the ~5 mm and tinted towards my left most of the time.
So I could fit in more for every page and didn't need to change page all the time and it was easier for me to see what I did.
After that I HAD TO use a number/character in at least two squares and at least two rows in between.
I am still having a grudge against that teacher. -.-' ' '
Since then, I've disliked writing because I tend to hold the pen too tight and still have that scolding in the back of my head. Really sad.