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

[Q]: Sentence: 'an area that has surrounded by a metal fence'. Find frequency of the letter 'o'
[A]: 1


[Q]: Sentence: 'a baby calf has a tag on its right ear'. Find frequency of the letter 'n'
[A]: 1


[Q]: Sentence: 'the lunch tray is stacked high with hot dogs'. Find frequency of the letter 'i'
[A]:
3