<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?
<bot>: 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