90100 divided by 91 
Our goal is to divide 90100 by 91.

Let's proceed to step 1:
91 goes into 9 0 times with a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Append the next digit (0) from the dividend to 9 and continue with: 90 / 91

Advancing to step 2:
91 can be fit into 90 0 times, resulting in a remainder of 90.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 90, we get 90.
Grab the next digit (1) from the dividend, add it to 90, then carry on: 901 / 91

Moving on to step 3:
901 divided by 91 is 9 with a remainder of 82.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
The remainder is 82 after subtracting 819 from 901.
Append the next digit (0) from the dividend to 82 and continue with: 820 / 91

Step 4:
The number 91 fits into 820 9 times, leaving a remainder of 1.
Write down 9 as next digit of the result. 
Result so far: 99.0
Subtract 819 from 820 to get 1.
Include the next digit (0) from the dividend after 1, then repeat: 10 / 91

Moving on to step 5:
10 divided by 91 is 0 with a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 990.0
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 6:
If we divide 100 by 91, we get 1 and a remainder of 9.
The number 1 becomes the next digit in our result. 
Result so far: 990.1
If we subtract 91 from 100, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 7:
91 can be fit into 90 0 times, resulting in a remainder of 90.
The number 0 becomes the next digit in our result. 
Result so far: 990.1
Subtract 0 from 90 to get 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Let's proceed to step 8:
The number 91 fits into 900 9 times, leaving a remainder of 81.
Put 9 as the next digit of the answer. 
Result so far: 990.109
If we subtract 819 from 900, we get 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Let's proceed to step 9:
91 goes into 810 8 times with a remainder of 82.
Record the quotient 8 as the next digit in the result. 
Result so far: 990.1098
If we take 728 away from 810, we end up with 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Moving on to step 10:
When dividing 820 by 91, we get 9 with a remainder of 1.
The next digit of our result is 9. 
Result so far: 990.10989
Subtracting 819 from 820 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 11:
The number 91 fits into 10 0 times, leaving a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 990.10989
Subtracting 0 from 10 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 12:
100 divided by 91 is 1 with a remainder of 9.
Put 1 as the next digit of the answer. 
Result so far: 990.1098901
If we take 91 away from 100, we end up with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Moving on to step 13:
When dividing 90 by 91, we get 0 with a remainder of 90.
The number 0 becomes the next digit in our result. 
Result so far: 990.1098901
Subtracting 0 from 90 leaves us with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Our division results in 990.1098901 with a remaining 9e-08.