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

You are given a 0-indexed array usageLimits of length n.
Your task is to create groups using numbers from 0 to n - 1, ensuring that each number, i, is used no more than usageLimits[i] times in total across all groups. You must also satisfy the following conditions:

Each group must consist of distinct numbers, meaning that no duplicate numbers are allowed within a single group.
Each group (except the first one) must have a length strictly greater than the previous group.

Return an integer denoting the maximum number of groups you can create while satisfying these conditions.
 
Please complete the following python code precisely:
```python
class Solution:
    def maxIncreasingGroups(self, usageLimits: List[int]) -> int:
```