<human>:  Julian has 400 legos and wants to make lego models of two identical airplanes. If each airplane model requires 240 legos, how many more legos does Julian need?
<bot>: How many legos are required for the two airplanes? ** Two aeroplanes require 240 legos/airplane x 2 airplanes = <<240*2=480>>480 legos.
How many more legos does Julian need? ** Julian needs 480 legos - 400 legos = <<480-400=80>>80 more legos
#### 80