<human>:  Jackson wants to improve his endurance running. His goal is to start by running 3 miles a day the first week, then spend the next four weeks running one additional mile/day each week. How many miles is Jackson running each day at the end of this exercise program?
<bot>: How many miles is Jackson running after four weeks? ** First, figure out how many additional miles Jackson is running after four weeks: 4 weeks * 1 extra mile/week = <<4*1=4>>4 extra miles
How many miles is Jackson running after four weeks? ** Then add the 4 extra miles to the 3 miles he initially ran: 4 miles + 3 miles = <<4+3=7>>7 miles
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