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

Q: Sentence: 'tow birds flying by a long necked crane'. Find frequency of the letter 'f'

A: 1
****
Q: Sentence: 'an image of a cautionary construction sign'. Find frequency of the letter 'a'

A: 5
****
Q: Sentence: 'little girl in a pink shirt eating a chocolate donut'. Find frequency of the letter 'i'

A:
6
****