89212091 divided by 939 
Our goal is to divide 89212091 by 939.

Step 1:
When dividing 8 by 939, we get 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Take the next digit (9) from the dividend and append it to 8, then repeat: 89 / 939

Going ahead to step 2:
If we divide 89 by 939, we get 0 and a remainder of 89.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 89 to get 89.
Append the next digit (2) from the dividend to 89 and continue with: 892 / 939

Advancing to step 3:
939 goes into 892 0 times with a remainder of 892.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 892 leaves us with 892.
Take the next digit (1) from the dividend and append it to 892, then repeat: 8921 / 939

Going ahead to step 4:
8921 divided by 939 is 9 with a remainder of 470.
Write down 9 as next digit of the result. 
Result so far: 9.0
If we take 8451 away from 8921, we end up with 470.
Take the next digit (2) from the dividend and append it to 470, then repeat: 4702 / 939

On to step 5:
939 goes into 4702 5 times with a remainder of 7.
The number 5 becomes the next digit in our result. 
Result so far: 95.0
Subtracting 4695 from 4702 leaves us with 7.
Grab the next digit (0) from the dividend, add it to 7, then carry on: 70 / 939

Let's proceed to step 6:
The number 939 fits into 70 0 times, leaving a remainder of 70.
Put 0 as the next digit of the answer. 
Result so far: 950.0
If we subtract 0 from 70, we get 70.
Fetch the next digit (9) from the dividend, attach it to 70 and continue: 709 / 939

Let's proceed to step 7:
939 goes into 709 0 times with a remainder of 709.
Use 0 as the next digit of our solution. 
Result so far: 9500.0
Subtract 0 from 709 to get 709.
Grab the next digit (1) from the dividend, add it to 709, then carry on: 7091 / 939

On to step 8:
939 can be fit into 7091 7 times, resulting in a remainder of 518.
Record the quotient 7 as the next digit in the result. 
Result so far: 95007.0
If we take 6573 away from 7091, we end up with 518.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5180, and continue the process.

Step 9:
939 can be fit into 5180 5 times, resulting in a remainder of 485.
The number 5 becomes the next digit in our result. 
Result so far: 95007.5
The remainder is 485 after subtracting 4695 from 5180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4850, and continue the process.

Advancing to step 10:
939 can be fit into 4850 5 times, resulting in a remainder of 155.
The next digit of our result is 5. 
Result so far: 95007.55
Deduct 4695 from 4850 and we're left with 155.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1550, and continue the process.

The final outcome is 95007.55, with a leftover of 0.155.