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: 'a commuter bus in england by a clock tower building'. Find frequency of the letter 'w'
[A]: 1


[Q]: Sentence: 'a tennis player about to hit the ball'. Find frequency of the letter 'i'
[A]:
2