Human: Dominick went to his team's changing room and saw half as many robots as helmets and half as many helmets as footballs kept there. If there were 20 helmets, calculate the total number of items Dominick saw. Assistant: 
How many footballs were there? ** If the number of helmets was 20, there were 2 footballs/helmet * 20 helmets = <<20*2=40>>40 footballs
How many robots were there? ** There were half as many robots as helmets, so in total, there were 1 robot/2 helmets * 20 helmets = <<1/2*20=10>>10 robots.
How many items were there? ** The total number of items in the changing room is 10 robots + 40 footballs + 20 helmets = <<10+40+20=70>>70 items
#### 70