In this task, you need to count the number of times the given letter appears in the given sentence.

Input: Consider Input: Sentence: 'many different species of sheep in display at a museum'. Find frequency of the letter 'h'

Output: 1


Input: Consider Input: Sentence: 'a line of people on motorcycles on the road'. Find frequency of the letter 'e'

Output: 5


Input: Consider Input: Sentence: 'a white plate topped with a sandwich and a slice of salami'. Find frequency of the letter 'i'


Output: 5