human
Each bank teller has 10 rolls of coins. Each roll has 25 coins. How many coins do four bank tellers have in all?
assistant
How many coins does each bank teller have? ** Each bank teller has 10 x 25 = <<10*25=250>>250 coins.
How many coins do four bank tellers have in all? ** Thus, four bank tellers have 250 x 4 = <<250*4=1000>>1000 coins.
#### 1000