In this task, you need to count the number of times the given letter appears in the given sentence.
--------
Question: Sentence: 'a man standing on a surf board in the ocean'. Find frequency of the letter 'f'

Answer: 1


Question: Sentence: 'the little girl is flying her kite in the field'. Find frequency of the letter 'i'

Answer: 7


Question: Sentence: 'salad and vegetables with me on top of plate'. Find frequency of the letter 'o'

Answer:
3