In this task, you need to count the number of times the given letter appears in the given sentence.
--------
Question: Sentence: 'a group of people are playing soccer on a beach'. Find frequency of the letter 'l'

Answer: 2


Question: Sentence: 'two bigger elephants standing with a small elephant'. Find frequency of the letter 't'

Answer: 5


Question: Sentence: 'a blue tiled bathroom with orange and white shower curtain'. Find frequency of the letter 's'

Answer:
1