Calvin and Susan play a Number-Game #2
For example : If Calvin's number begins \(2112\), Susan's number would begin \(111112112111\).
After Susan finishes writing her number, she notices that the left-most 2187 digits in her number is exactly same as that of Calvin's number. How many times do five \(1\)s occur consecutively in Calvin's number?
Also try it's sister problem, an easy version: Calvin and Susan play a Number-Game #1