But $ \frac144256 = \frac916 $? $144 \div 16 = 9$, $256 \div 16 = 16$, but $16 \times 16 = 256$, $16 \times 9 = 144$, yes. But $ \frac144256 = \frac144 \div 16256 \div 16 = \frac916 $, correct. - Abu Waleed Tea