In this task, you need to count the number of times the given letter appears in the given sentence.
--------
Question: Sentence: 'a white bowl filled with peeled orange slices'. Find frequency of the letter 's'

Answer: 2


Question: Sentence: 'a passenger train that is going over a bridge'. Find frequency of the letter 't'

Answer: 3


Question: Sentence: 'closed toilet and simple shower in a home bathroom'. Find frequency of the letter 'd'

Answer:
2