Regular rate of charge: $25/day/dog.
Holiday rate: $28/day/dog.
 
Change the quantity to match the number of days the booking duration takes place. Multiply the number of dogs by the number of days.
 
One dog:
Ex: 1/1/19 , 1/3/19, 1/5/19 is 3 days. Change the quanity to 3.
 
Multipule dogs:
Ex 2: 1/1/19 , 1/3/19,  1/5/19 - 2 dogs is 3 days 2 dogs. Change the quanity to 6.