The Host Riding Horseback

Now given a guest on horseback rides 300 li in a day. The guest leaves his clothes behind. The host discovers them after 1/3 day, and he starts out with the clothes. As soon as he catches up with the guest, the host gives back the clothes and returns home in 3/4 day. Assume the host rides without stop. Tell: how far can he go in a day? (China, 100 B.C.E.)