Tolong Kasih Tau Caranya

a) 2,8:1/3=28/10:1/3
=28/10*3/1=84/10=42/5
b) 15/10:5/6=15/10*6/5=90/50=9/5
c) 2163/1000:3/5=2163/1000*5/3=10815/3000= 721/200
d) 1357/1000:1/4=1357/1000*4/1=5428/1000= 1357/250
e) 125/1000:4/3=125/1000*3/4=375/4000= 15/160=3/32
f) 1543/1000:8/3=1543/1000*3/8=4629/8000