Given a string `expression` of numbers and operators, return all possible results from computing all the different possible ways to group numbers and operators. You may return the answer in any order.

Example 1:

    Input: expression = "2-1-1"
    Output: [0,2]
    Explanation:
    ((2-1)-1) = 0
    (2-(1-1)) = 2

Example 2:

    Input: expression = "2*3-4*5"
    Output: [-34,-14,-10,-10,10]
    Explanation:
    (2*(3-(4*5))) = -34
    ((2*3)-(4*5)) = -14
    ((2*(3-4))*5) = -10
    (2*((3-4)*5)) = -10
    (((2*3)-4)*5) = 10

Constraints:

- `1 <= expression.length <= 20`
- `expression` consists of digits and the operator `'+'`, `'-'`, and `'*'`.
- All the integer values in the input expression are in the range `[0, 99]`.