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

Q: Sentence: 'a toilet filled with a brown liner and dirty water'. Find frequency of the letter 't'

A: 5
****
Q: Sentence: 'large grassy pasture filled with trees and a single horse'. Find frequency of the letter 'l'

A: 4
****
Q: Sentence: 'a cluttered desk with a tv and a lap top computer plugged into the wall'. Find frequency of the letter 'e'

A:
6
****