Vehicles acquired by a fleet owner after commencement of a registration year and subsequently added to a fleet registered hereunder, shall be proportionately registered as part of such owner's fleet by making application to the division of vehicles upon a form and in a manner prescribed by the director, and the payment of fleet registration fees, determined by applying the in-state mileage percentage from the original application filed by the fleet owner for a registration year, to the regular annual registration fees applicable with respect to such additional vehicles for the remainder of such registration year, including any title applications, title fees, and any other fees or penalties prescribed by this act.
K.S.A. 8-1,108