<human>:  The Donaldsons pay $15 per hour for babysitting. The Merck family pays $18 per hour and the Hille family pays $20 per hour for babysitting. Layla babysat for the Donaldsons for 7 hours, the Merck family for 6 hours and the Hille family for 3 hours. How many dollars did Layla earn babysitting?
<bot>: How many dollars did Layla earn from the Donaldsons? ** Donaldsons pay $15/hour = 15*7 = $<<15*7=105>>105.
How many dollars did Layla earn from the Mercks? ** The Mercks pay $18/hour = 18*6 = $<<18*6=108>>108.
How many dollars did Layla earn from the Hilles? ** The Hilles pay $20/hour = 20*3 = <<20*3=60>>60.
How many dollars did Layla earn babysitting? ** The total amount Layla earned is 105 + 108 + 60 = <<105+108+60=273>>273.
How many dollars did Layla earn babysitting? ** Layla earned $273 for babysitting.
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