Please solve the programming task below using a self-contained code snippet in a markdown code block.

There is a malfunctioning keyboard where some letter keys do not work. All other keys on the keyboard work properly.
Given a string text of words separated by a single space (no leading or trailing spaces) and a string brokenLetters of all distinct letter keys that are broken, return the number of words in text you can fully type using this keyboard.
 
Please complete the following python code precisely:
```python
class Solution:
    def canBeTypedWords(self, text: str, brokenLetters: str) -> int:
```