Finish the method definition given below.
Given three number arguments min, max and digit, the method digit_count should count the number of times digit occurs in the numbers that are in the range (inclusive) from min to max and then return the count.
Example:
- digit_count(51, 55, 5) ➞ 6
- [51, 52, 53, 54, 55] : 5 occurs 6 times