Need help answering please give me an explanation keep getting the answer wrong.

Question 2

Perform a binary division for (1 0 0 1 1 1. 1 1 0 1 1 0 with decimal 8 ) where the answers must be binary:

Question 3

Perform a binary addition of
1 0 1 0 1 0 1 0
+ 0 0 1 1 0 0 1 1
Where answers should be binary:

Perform a binary subtraction for
1 0 1 0 1 0 1 0
- 0 1 0 1 0 0 1 1

Where should the answers be in binary and use the 2's complement.