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

Q: Sentence: 'a street at night with trees and streetlights on'. Find frequency of the letter 't'

A: 9
****
Q: Sentence: 'a man on stiltz is standing under a pink umbrella'. Find frequency of the letter 's'

A: 3
****
Q: Sentence: 'a kite flying in a colorful sunset behind buildings'. Find frequency of the letter 'u'

A:
3
****