We look at the division of 21676791 by 8 
We want to divide 21676791 by 8.

Step 1:
8 can be fit into 2 0 times, resulting in a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 8

Going ahead to step 2:
21 divided by 8 is 2 with a remainder of 5.
Write down 2 as next digit of the result. 
Result so far: 2.0
Subtracting 16 from 21 leaves us with 5.
Append the next digit (6) from the dividend to 5 and continue with: 56 / 8

Advancing to step 3:
56 divided by 8 is 7 with a remainder of 0.
The next digit of our result is 7. 
Result so far: 27.0
Subtracting 56 from 56 leaves us with 0.
Fetch the next digit (7) from the dividend, attach it to 0 and continue: 7 / 8

Moving on to step 4:
8 can be fit into 7 0 times, resulting in a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 270.0
Subtracting 0 from 7 leaves us with 7.
Fetch the next digit (6) from the dividend, attach it to 7 and continue: 76 / 8

Step 5:
76 divided by 8 is 9 with a remainder of 4.
Use 9 as the next digit of our solution. 
Result so far: 2709.0
If we subtract 72 from 76, we get 4.
Include the next digit (7) from the dividend after 4, then repeat: 47 / 8

Moving on to step 6:
When dividing 47 by 8, we get 5 with a remainder of 7.
Record the quotient 5 as the next digit in the result. 
Result so far: 27095.0
If we take 40 away from 47, we end up with 7.
Bring next digit (9) of the dividend behind the 7 and repeat the process: 79 / 8

Advancing to step 7:
8 can be fit into 79 9 times, resulting in a remainder of 7.
The number 9 becomes the next digit in our result. 
Result so far: 270959.0
The remainder is 7 after subtracting 72 from 79.
Fetch the next digit (1) from the dividend, attach it to 7 and continue: 71 / 8

Step 8:
If we divide 71 by 8, we get 8 and a remainder of 7.
Put 8 as the next digit of the answer. 
Result so far: 2709598.0
Subtracting 64 from 71 leaves us with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 9:
8 can be fit into 70 8 times, resulting in a remainder of 6.
Write down 8 as next digit of the result. 
Result so far: 2709598.8
Subtracting 64 from 70 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 10:
8 can be fit into 60 7 times, resulting in a remainder of 4.
Write down 7 as next digit of the result. 
Result so far: 2709598.87
Subtract 56 from 60 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 11:
If we divide 40 by 8, we get 5 and a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 2709598.875
Subtract 40 from 40 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 12:
The number 8 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 2709598.875
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 13:
When dividing 0 by 8, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 2709598.875
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 2709598.875 with a remainder of 0.0.