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

[Q]: Sentence: 'a group of people standing around a table filled with assorted electronic devices'. Find frequency of the letter 'w'
[A]: 1


[Q]: Sentence: 'a picture of two men on a motorcycle in front of a railroad track'. Find frequency of the letter 'n'
[A]: 4


[Q]: Sentence: 'a fridge with writing on it left outside'. Find frequency of the letter 'g'
[A]:
2