e: =113+87-64-26
=200-90=110
f: =244+66-152-48
=310-200
=110
g: =437-437+123-33
=123-33
=90
h: =599-499+387
=387+100
=487
i: =4*25*8*125
=100*1000
=100000
k: =2*5*3*19
=57*10
=570
l: =78(7+3)
=78*10=780
m: =64(49-39)
=64*10=640
n: =19(41+59)
=19*100
=1900