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

[Q]: Sentence: 'a blue bowl holding mashed bananas and oatmeal with a bottle of sugar and cinnamon sitting beside it'. Find frequency of the letter 'g'
[A]: 3


[Q]: Sentence: 'men standing in the grass with a frisbee'. Find frequency of the letter 'a'
[A]: 3


[Q]: Sentence: 'a woman is standing next to a microwave'. Find frequency of the letter 's'
[A]:
2