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

Input: Consider Input: Sentence: 'a child sitting a table with a pizza in front of him'. Find frequency of the letter 'h'

Output: 3

Input: Consider Input: Sentence: 'man in a radio studio wearing a suit in front of a microphone'. Find frequency of the letter 't'

Output: 3

Input: Consider Input: Sentence: 'a sign that says pay here to park'. Find frequency of the letter 't'
Output: 3