Today, Sean left home at 8\text{ a. m.}8 a. m.8, start text, space, a, point, m, point, end text, drove to work, and worked from 9\text{ a. m.}9 a. m.9, start text, space, a, point, m, point, end text until 5\text{ p. m.}5 p. m.5, start text, space, p, point, m, point, end text On the drive back home, Sean got stuck in slow-moving traffic for 222 hours, then stopped to have dinner, and finally got home at 9\colon30\text{ p. m.}9:30 p. m.