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

Q: Sentence: 'a desk covered in notepads, a laptop and other devices'. Find frequency of the letter 'c'

A: 2
****
Q: Sentence: 'a man riding a skateboard up the side of a ramp'. Find frequency of the letter 'u'

A: 1
****
Q: Sentence: 'an elephant standing next to a stone wall'. Find frequency of the letter 'l'

A:
3
****