Continue from the last answer
Press 
, type 6, press 
, type 4, and press 
: 10.. Now press , type 5, and press : the calculator continues from 10, so the answer is 15.. Type 8, press 
, type 2, and press : 16.. Press 
and : the answer is squared, 256.. Type 44, press , type 37, and press : 81.. Press 
and then : the square root of the last answer, 9..