Battle Creek Cereal Company has four main products: Corn Flakes, Frosted Flakes, Bran Flakes and Strawberry Flakes. The average daily demand for the products is:

Corn Flakes: 1,500 CS

Frosted Flakes: 1,355 CS

Bran Flakes: 1,905 CS

Strawberry Flakes: 2,980 CS

These products are manufactured on a single assembly line with a daily production rate of 11,055 CS. It costs Battle Creek $1,500 to set up each cereal for producition and the daily holding cost for cereal is $0.05. What is the length of the lowest cost cyclic schedule (ignoring setup time constraints) in days?