<human>:  John brings his dog to the vet. His dog needs 2 vaccines, which are $20 each, and a heartworm check. The heartworm check is 60% of his total bill. If he brought $125 with him, how much does he leave with?
<bot>: How much do the vaccines cost? ** The vaccines cost 40 because 2 x 20 = <<2*20=40>>40
How much are the vaccines? ** The vaccines are 40% of his total bill because 100 - 60 = <<100-60=40>>40
How much is the total bill? ** The total bill is $100 because 40 / .4 = <<40/.4=100>>100
How much does John leave with? ** He leaves with $25 because 125 - 100 = <<125-100=25>>25
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