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

Sentence: 'two men in black wet suits beside a white surfboard'. Find frequency of the letter 'e'
5

Sentence: 'a giraffe shares a habitat with a zebra, an ostrich, and an okapi'. Find frequency of the letter 'e'
3

Sentence: 'bananas and apples are close up in a bowl'. Find frequency of the letter 'c'

1