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

Q: Sentence: 'a piece of meat covered in ketchup next to a hamburger on a green plate'. Find frequency of the letter 'g'

A: 2
****
Q: Sentence: 'there is an old stove with old pots on the burners'. Find frequency of the letter 't'

A: 5
****
Q: Sentence: 'a baseball game is being played with the batter up'. Find frequency of the letter 's'

A:
2
****