message: Added explanation and more sample test cases to a question
diff: @@ -31,3 +31,22 @@ Sample Input
  Sample Output
  3
  +
  +Explanation:
  +148 if written 3 times becomes 148148148
  +Sum of all digits of 148148148 is 39
  +Sum of all digits of 39 is 12
  +Sum of all digits of 12 is 3
  +Since 3 is a single digit, we will print 3
  +
  +Sample Input 2
  +42 4
  +
  +Sample Output 2
  +6
  +
  +Explanation:
  +42 if written 4 times becomes 42424242
  +Sum of all digits of 42424242 is 24
  +Sum of all digits of 24 is 6
  +Since 6 is a single digit, we will print 6
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