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

Input: Consider Input: Sentence: 'the man is holding a plastic sled with snow in it next to a child'. Find frequency of the letter 'g'

Output: 1


Input: Consider Input: Sentence: 'a boy swinging a bat while playing baseball'. Find frequency of the letter 'h'

Output: 1


Input: Consider Input: Sentence: 'the cookies have chocolate and oats in them'. Find frequency of the letter 'i'


Output: 2