We're dividing 21151008 by 891 
Our goal is to divide 21151008 by 891.

Advancing to step 1:
When dividing 2 by 891, we get 0 with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 891

Step 2:
If we divide 21 by 891, we get 0 and a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Include the next digit (1) from the dividend after 21, then repeat: 211 / 891

Going ahead to step 3:
The number 891 fits into 211 0 times, leaving a remainder of 211.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 211 to get 211.
Include the next digit (5) from the dividend after 211, then repeat: 2115 / 891

Advancing to step 4:
891 can be fit into 2115 2 times, resulting in a remainder of 333.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtract 1782 from 2115 to get 333.
Take the next digit (1) from the dividend and append it to 333, then repeat: 3331 / 891

Advancing to step 5:
891 can be fit into 3331 3 times, resulting in a remainder of 658.
Use 3 as the next digit of our solution. 
Result so far: 23.0
If we take 2673 away from 3331, we end up with 658.
Fetch the next digit (0) from the dividend, attach it to 658 and continue: 6580 / 891

Advancing to step 6:
When dividing 6580 by 891, we get 7 with a remainder of 343.
Write down 7 as next digit of the result. 
Result so far: 237.0
The remainder is 343 after subtracting 6237 from 6580.
Bring next digit (0) of the dividend behind the 343 and repeat the process: 3430 / 891

Step 7:
If we divide 3430 by 891, we get 3 and a remainder of 757.
Write down 3 as next digit of the result. 
Result so far: 2373.0
Subtracting 2673 from 3430 leaves us with 757.
Fetch the next digit (8) from the dividend, attach it to 757 and continue: 7578 / 891

Moving on to step 8:
7578 divided by 891 is 8 with a remainder of 450.
Write down 8 as next digit of the result. 
Result so far: 23738.0
Subtracting 7128 from 7578 leaves us with 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4500, and continue the process.

Advancing to step 9:
When dividing 4500 by 891, we get 5 with a remainder of 45.
The number 5 becomes the next digit in our result. 
Result so far: 23738.5
Deduct 4455 from 4500 and we're left with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

On to step 10:
891 can be fit into 450 0 times, resulting in a remainder of 450.
Record the quotient 0 as the next digit in the result. 
Result so far: 23738.5
Subtract 0 from 450 to get 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4500, and continue the process.

Going ahead to step 11:
If we divide 4500 by 891, we get 5 and a remainder of 45.
The number 5 becomes the next digit in our result. 
Result so far: 23738.505
If we subtract 4455 from 4500, we get 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Moving on to step 12:
If we divide 450 by 891, we get 0 and a remainder of 450.
Record the quotient 0 as the next digit in the result. 
Result so far: 23738.505
The remainder is 450 after subtracting 0 from 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4500, and continue the process.

On to step 13:
891 can be fit into 4500 5 times, resulting in a remainder of 45.
Write down 5 as next digit of the result. 
Result so far: 23738.50505
The remainder is 45 after subtracting 4455 from 4500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Going ahead to step 14:
When dividing 450 by 891, we get 0 with a remainder of 450.
Write down 0 as next digit of the result. 
Result so far: 23738.50505
If we take 0 away from 450, we end up with 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4500, and continue the process.

Let's proceed to step 15:
4500 divided by 891 is 5 with a remainder of 45.
Use 5 as the next digit of our solution. 
Result so far: 23738.5050505
If we take 4455 away from 4500, we end up with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Let's proceed to step 16:
The number 891 fits into 450 0 times, leaving a remainder of 450.
The number 0 becomes the next digit in our result. 
Result so far: 23738.5050505
If we take 0 away from 450, we end up with 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4500, and continue the process.

The final result is 23738.5050505 with a remainder of 4.5e-07.