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

Input: Consider Input: Sentence: 'decorated baseball cake in a clear plastic box'. Find frequency of the letter 'k'

Output: 1


Input: Consider Input: Sentence: 'the miniature, elaborate exhibit depicts an ancient boating scene'. Find frequency of the letter 'n'

Output: 6


Input: Consider Input: Sentence: 'a woman in a red and white boat water and trees'. Find frequency of the letter 'o'


Output: 2