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

Sentence: 'a couple of items that are on the wall'. Find frequency of the letter 'm'
1

Sentence: 'seagulls sit on the posts of a seaside balcony by a clock tower'. Find frequency of the letter 'g'
1

Sentence: 'fruit and vegetable shop where fresh fruits are available on fixed rate'. Find frequency of the letter 'e'

10