We look at the division of 80940 by 90 
We want to figure out the number of times 80940 can be divided by 90.

Let's proceed to step 1:
90 can be fit into 8 0 times, resulting in a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Bring next digit (0) of the dividend behind the 8 and repeat the process: 80 / 90

Moving on to step 2:
The number 90 fits into 80 0 times, leaving a remainder of 80.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 80 to get 80.
Grab the next digit (9) from the dividend, add it to 80, then carry on: 809 / 90

Moving on to step 3:
When dividing 809 by 90, we get 8 with a remainder of 89.
Put 8 as the next digit of the answer. 
Result so far: 8.0
The remainder is 89 after subtracting 720 from 809.
Append the next digit (4) from the dividend to 89 and continue with: 894 / 90

Moving on to step 4:
90 can be fit into 894 9 times, resulting in a remainder of 84.
Record the quotient 9 as the next digit in the result. 
Result so far: 89.0
If we take 810 away from 894, we end up with 84.
Include the next digit (0) from the dividend after 84, then repeat: 840 / 90

Step 5:
840 divided by 90 is 9 with a remainder of 30.
Record the quotient 9 as the next digit in the result. 
Result so far: 899.0
The remainder is 30 after subtracting 810 from 840.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 6:
300 divided by 90 is 3 with a remainder of 30.
Record the quotient 3 as the next digit in the result. 
Result so far: 899.3
Deduct 270 from 300 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 7:
When dividing 300 by 90, we get 3 with a remainder of 30.
Put 3 as the next digit of the answer. 
Result so far: 899.33
Subtracting 270 from 300 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

The quotient of the division is 899.33, and the remainder is 0.03.