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

Q: Sentence: 'a baby calf has a tag on its right ear'. Find frequency of the letter 'n'

A: 1
****
Q: Sentence: 'a toilet of some sort near a sink of some sort'. Find frequency of the letter 'o'

A: 7
****
Q: Sentence: 'a black cat is laying in an open suitcase'. Find frequency of the letter 'a'

A:
6
****