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

[Q]: Sentence: 'there is an old stove with old pots on the burners'. Find frequency of the letter 't'
[A]: 5


[Q]: Sentence: 'a yellow fire hydrant in the forefront of a roadway'. Find frequency of the letter 'r'
[A]: 5


[Q]: Sentence: 'a group of girls sitting outside holding umbrellas and a camera'. Find frequency of the letter 's'
[A]:
4