In this task, you need to count the number of words in a sentence that contain the given letter

Example Input: Sentence: 'a keyboard on a table with a toothbrush a book some sunglasses and coffee'. How many words contain the letter 'e' in the sentence.
Example Output: 5

Example Input: Sentence: 'a construction worker smashes away at the roof of a building'. How many words contain the letter 'b' in the sentence.
Example Output: 1

Example Input: Sentence: 'a bunch of people in a big field filled with bananas'. How many words contain the letter 'r' in the sentence.
Example Output:
0