human
Johann and two friends are to deliver 180 pieces of certified mail. His friends each deliver 41 pieces of mail. How many pieces of mail does Johann need to deliver?
assistant
How many pieces of mail do his friends deliver? ** Friends = 41 * 2 = <<41*2=82>>82
How many pieces of mail does Johann need to deliver? ** Johann = 180 - 82 = <<180-82=98>>98
How many pieces of mail does Johann need to deliver? ** Johann must deliver 98 pieces of mail.
#### 98