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

Input: Consider Input: Sentence: 'the skateboarder is jumping over a huge statue of a shoe'. Find frequency of the letter 'i'

Output: 2


Input: Consider Input: Sentence: 'a dilapidated bench in a park under a tree'. Find frequency of the letter 'p'

Output: 2


Input: Consider Input: Sentence: 'a large living room has many books stacked on the table'. Find frequency of the letter 'b'


Output: 2