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

Sentence: 'the skateboarder is jumping over a huge statue of a shoe'. Find frequency of the letter 'i'
2

Sentence: 'a bus with two floors belonging to london country'. Find frequency of the letter 't'
4

Sentence: 'the young couple are standing in front of the window'. Find frequency of the letter 'a'

2