Below is an instruction that describes a task. Write a response that appropriately completes the request in English. Please answer in English.

### Instruction:
Tom and Elizabeth have a competition to climb a hill. Elizabeth takes 30 minutes to climb the hill. Tom takes four times as long as Elizabeth does to climb the hill. How many hours does it take Tom to climb up the hill?

### Response:
Tom takes four times as long to climb the hill so he takes 4*30 = <<4*30=120>>120 minutes to climb the hill.
Tom takes 120 minutes to climb the hill so he climbs it in 120/60 = <<120/60=2>>2 hours.
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