Kai has put out 20 x 3 = <<20*3=60>>60 fires for the week.
Eli has put out 60 / 2 = <<60/2=30>>30 fires for the week.
Therefore, the total amount of fires they have put out over the entire week was 20 + 60 + 30 = <<20+60+30=110>>110.
#### 110