里数 is read as りすう (risuu) and means mileage.
りすう
risuu
り
neighbourhood (under the ritsuryō system; orig. of 50 homes)
さとご
adopted animal (e.g. pet)
さとがえり
bride's first visit to her parents after getting married
さとおや
(pet) caretaker
さとちさとやま
mountain villages and neighbouring agricultural, forest, etc. areas
さとがえりしゅっさん
returning to one's parents' house to give birth
さとおやかい
adoption event for homeless animals
りじん
villager
さとおさ
village chief
さとち
mountain village (region)
さとかた
wife's family
りげん
dialect