when I was learning to be an Electrician
we had two things drilled in to our small brains.
1. use the units always
2. show all stages of the formulae.
and
check the result with an approximate value
eg.
4096 = 1500 = ratio of 2.7 : 1
200 x 2.7 = 546 = about 1/3 of 1500
the value looks correct see