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

Q: Sentence: 'a photo of a toilet which is not clean'. Find frequency of the letter 'w'

A: 1
****
Q: Sentence: 'the two dogs are playing in the pen together'. Find frequency of the letter 'o'

A: 3
****
Q: Sentence: 'a desk witgmh a telephone, laptop, cell phone and a book on it'. Find frequency of the letter 'a'

A:
5
****