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

Input: Consider Input: Sentence: 'a softball player holding the bat on first base'. Find frequency of the letter 't'

Output: 4


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 home kitchen with children's drawing on the refrigerator'. Find frequency of the letter 'e'


Output: 6