GCD and LCM
For the greatest common divisor of 24 and 36, press 
, type 24, then 
and the 2 key, 
. Type 36 and press 
: 12.. For the least common multiple of 15 and 9, press , type 15, then and the 3 key, 
. Type 9 and press : 45..
For the greatest common divisor of 24 and 36, press , type 24, then and the 2 key, . Type 36 and press : 12.. For the least common multiple of 15 and 9, press , type 15, then and the 3 key, . Type 9 and press : 45..