<human>:  Mandy has three $20 bills while Manny has two $50 bills. If both of them decide to exchange their bills for $10 bills, how many more $10 bills than Mandy will Manny have?
<bot>: How much money does Mandy have? ** Mandy has a total of $20 x 3 = $<<20*3=60>>60.
How many $10 bills will Mandy have? ** So, she will have $60/$10 = <<60/10=6>>6 $10 bills.
How much money does Manny have? ** Manny has a total of $50 x 2 = $<<50*2=100>>100.
How many $10 bills will Manny have? ** So, he will have $100/$10 = <<100/10=10>>10 $10 bills.
How many more $10 bills than Mandy will Manny have? ** Hence, Manny has 10 - 6 = <<10-6=4>>4 more $10 bills than Mandy.
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