<human>:  George, a grade six teacher, ordered 600 burritos for the sixth-grade class picnic. If there were 50 students at the picnic, and each student was given ten burritos, with Mr. George eating 20 of them, calculate the total number of leftover burritos from the picnic?
<bot>: How many burritos did the students eat? ** The total number of burritos eaten by the students is 50*10 = <<50*10=500>>500
How many burritos did the students and Mr. George eat? ** If Mr George also ate 20, the total number of burritos eaten at the picnic is 500+20 = <<500+20=520>>520
How many leftover burritos were there? ** There were 600-520 = <<600-520=80>>80 leftover burritos.
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