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

Sentence: 'a baseball player dropping his bat and starting to run'. Find frequency of the letter 'o'
2

Sentence: 'the ingredients are ready on the wooden table'. Find frequency of the letter 'w'
1

Sentence: 'the professional baseball player s standing in the correct stance'. Find frequency of the letter 'c'

3

