human
John visits his parents twice a month. It takes him 2 hours to drive there at a speed of 70 mph. Considering the round trip, how many miles a month does he drive when visiting his parents?
assistant
How far away are his parents? ** His parents live 70*2=<<70*2=140>>140 miles away
How many miles does he drive in total? ** So he drives 140*2=<<140*2=280>>280 miles a round trip
How many miles does he drive in total? ** 280*2 = <<280*2=560>>560 miles a month
#### 560