PROBLEMS:
NR→N10N_{\text{R}}\to{N}_{10} NR→N10
N10→NRN_{10}\to{N}_{\text{R}} N10→NR
NR1→NR2N_{\text{R}1}\to{N}_{\text{R}2} NR1→NR2
PROBLEMS: UNSIGNED RANGE
PROBLEMS: 2's COMPLEMENT RANGE