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

Sentence: 'a bowl of granola with raspberries and honey on top with a spoon'. Find frequency of the letter 'w'
3

Sentence: 'a woman in a tank top reaches out for a frisbee'. Find frequency of the letter 'a'
6

Sentence: 'three elephants with their heads down in the wild'. Find frequency of the letter 'w'

3