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

Sentence: 'a grapefruit, toast, coffee and other items are on a tray'. Find frequency of the letter 't'
6

Sentence: 'two people are riding on canoes down a river'. Find frequency of the letter 'e'
5

Sentence: 'a wide angle view of the kitchen work area'. Find frequency of the letter 'i'

3