<human>:  The elevator in Jack's building supports a maximum load of 700 kg. An adult weighs an average of 80 kg. If Jack rides the elevator with 8 other adults, by how much will they have exceeded the maximum load of the elevator?
<bot>: How many adults are there? ** Jack and 8 other adults form a total of 8 adults + 1 adult = <<8+1=9>>9 adults.
How much do the 9 adults weigh together? ** In total, the 9 adults together weigh 9 adults * 80 kg/adult = <<9*80=720>>720 kg.
How much have the 9 adults exceeded the maximum load of the elevator? ** They have exceeded the maximum load of the elevator by 720 kg - 700 kg = <<720-700=20>>20 kg.
#### 20