You need to remember the Sign Rules for Division:

And the Sign Rules for Multiplication:

Then, knowing those rules, you can solve the operations given in the exercise:
1. For the Integer Division:

The result is positive because both numbers have the same sign.
Now, knowing that result, you can set up the following Related Equation using Integer Multiplication:

2. For the second Division, you get:

Then, its corresponding Related Equation using Integer Multiplication can be:

3. For the next one, you get:

So, its corresponding Related Equation using Integer Multiplication can be:

4. For the last Division, you get:

Hence, its corresponding Related Equation using Integer Multiplication can be:

Therefore, the answer is: