[ Divisibility of numbers. General properties ]

On a bus rode Andrey

To the circle and back home,

Paying 115 rubles,

He bought himself a pass.

In January he didn't get it,

And therefore for several days

He bought a ticket from the driver

For 15 rubles for himself.

And on another day the conductor

Took only 11 rubles from him.

Returning from his circle

Every time he walked home our Andrey.

For January, how much money was spent,

The thrifty Andrey calculated:

To his surprise, he got

Exactly 115 rubles!

Calculate now as quickly as you can,

How many times the circle was in January

#