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

Input: Consider Input: Sentence: 'a fluffy white car looking in a mirror'. Find frequency of the letter 'k'

Output: 1


Input: Consider Input: Sentence: 'a toilet of some sort near a sink of some sort'. Find frequency of the letter 'o'

Output: 7


Input: Consider Input: Sentence: 'a metal bowl filled with two oranges on top of a wooden table'. Find frequency of the letter 'o'


Output: 8