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

Input: Consider Input: Sentence: 'two baseball players high five each other during a game'. Find frequency of the letter 'y'

Output: 1


Input: Consider Input: Sentence: 'a blue fire hydrant painted on the bottom of it'. Find frequency of the letter 'h'

Output: 2


Input: Consider Input: Sentence: 'a man with a very large man made kite'. Find frequency of the letter 'a'


Output: 6