We look at the division of 21058376 by 868 
We want to divide 21058376 by 868.

On to step 1:
The number 868 fits into 2 0 times, leaving a remainder of 2.
The number 0 becomes the next digit in our result. 
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 / 868

Moving on to step 2:
If we divide 21 by 868, we get 0 and a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 21 to get 21.
Grab the next digit (0) from the dividend, add it to 21, then carry on: 210 / 868

Moving on to step 3:
If we divide 210 by 868, we get 0 and a remainder of 210.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 210 to get 210.
Take the next digit (5) from the dividend and append it to 210, then repeat: 2105 / 868

Advancing to step 4:
868 goes into 2105 2 times with a remainder of 369.
The next digit of our result is 2. 
Result so far: 2.0
Subtracting 1736 from 2105 leaves us with 369.
Fetch the next digit (8) from the dividend, attach it to 369 and continue: 3698 / 868

Going ahead to step 5:
868 can be fit into 3698 4 times, resulting in a remainder of 226.
Put 4 as the next digit of the answer. 
Result so far: 24.0
The remainder is 226 after subtracting 3472 from 3698.
Grab the next digit (3) from the dividend, add it to 226, then carry on: 2263 / 868

Let's proceed to step 6:
868 goes into 2263 2 times with a remainder of 527.
The next digit of our result is 2. 
Result so far: 242.0
If we take 1736 away from 2263, we end up with 527.
Fetch the next digit (7) from the dividend, attach it to 527 and continue: 5277 / 868

Step 7:
If we divide 5277 by 868, we get 6 and a remainder of 69.
The next digit of our result is 6. 
Result so far: 2426.0
If we take 5208 away from 5277, we end up with 69.
Bring next digit (6) of the dividend behind the 69 and repeat the process: 696 / 868

Moving on to step 8:
If we divide 696 by 868, we get 0 and a remainder of 696.
Use 0 as the next digit of our solution. 
Result so far: 24260.0
If we subtract 0 from 696, we get 696.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6960, and continue the process.

Moving on to step 9:
868 goes into 6960 8 times with a remainder of 16.
Use 8 as the next digit of our solution. 
Result so far: 24260.8
Subtract 6944 from 6960 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 10:
868 can be fit into 160 0 times, resulting in a remainder of 160.
Use 0 as the next digit of our solution. 
Result so far: 24260.8
The remainder is 160 after subtracting 0 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

On to step 11:
The number 868 fits into 1600 1 times, leaving a remainder of 732.
Put 1 as the next digit of the answer. 
Result so far: 24260.801
The remainder is 732 after subtracting 868 from 1600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7320, and continue the process.

Moving on to step 12:
The number 868 fits into 7320 8 times, leaving a remainder of 376.
The number 8 becomes the next digit in our result. 
Result so far: 24260.8018
If we subtract 6944 from 7320, we get 376.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3760, and continue the process.

Going ahead to step 13:
3760 divided by 868 is 4 with a remainder of 288.
Write down 4 as next digit of the result. 
Result so far: 24260.80184
Subtract 3472 from 3760 to get 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

Moving on to step 14:
The number 868 fits into 2880 3 times, leaving a remainder of 276.
The number 3 becomes the next digit in our result. 
Result so far: 24260.801843
Subtract 2604 from 2880 to get 276.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2760, and continue the process.

Step 15:
868 goes into 2760 3 times with a remainder of 156.
The number 3 becomes the next digit in our result. 
Result so far: 24260.8018433
Subtracting 2604 from 2760 leaves us with 156.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1560, and continue the process.

The final outcome is 24260.8018433, with a leftover of 1.56e-06.