863326 divided by 21 
We're looking to find how many times 21 goes into 863326.

Going ahead to step 1:
8 divided by 21 is 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Grab the next digit (6) from the dividend, add it to 8, then carry on: 86 / 21

Step 2:
21 goes into 86 4 times with a remainder of 2.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Subtract 84 from 86 to get 2.
Fetch the next digit (3) from the dividend, attach it to 2 and continue: 23 / 21

Moving on to step 3:
21 can be fit into 23 1 times, resulting in a remainder of 2.
The next digit of our result is 1. 
Result so far: 41.0
Deduct 21 from 23 and we're left with 2.
Fetch the next digit (3) from the dividend, attach it to 2 and continue: 23 / 21

Let's proceed to step 4:
23 divided by 21 is 1 with a remainder of 2.
Record the quotient 1 as the next digit in the result. 
Result so far: 411.0
The remainder is 2 after subtracting 21 from 23.
Append the next digit (2) from the dividend to 2 and continue with: 22 / 21

Advancing to step 5:
If we divide 22 by 21, we get 1 and a remainder of 1.
The number 1 becomes the next digit in our result. 
Result so far: 4111.0
Deduct 21 from 22 and we're left with 1.
Append the next digit (6) from the dividend to 1 and continue with: 16 / 21

Moving on to step 6:
21 goes into 16 0 times with a remainder of 16.
Write down 0 as next digit of the result. 
Result so far: 41110.0
Subtract 0 from 16 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.

Let's proceed to step 7:
21 goes into 160 7 times with a remainder of 13.
Write down 7 as next digit of the result. 
Result so far: 41110.7
If we take 147 away from 160, we end up with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Advancing to step 8:
If we divide 130 by 21, we get 6 and a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 41110.76
Deduct 126 from 130 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 9:
40 divided by 21 is 1 with a remainder of 19.
Put 1 as the next digit of the answer. 
Result so far: 41110.761
Deduct 21 from 40 and we're left with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 10:
21 goes into 190 9 times with a remainder of 1.
The number 9 becomes the next digit in our result. 
Result so far: 41110.7619
Deduct 189 from 190 and we're left 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.

Step 11:
If we divide 10 by 21, we get 0 and a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 41110.7619
If we take 0 away from 10, we end up 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:
21 can be fit into 100 4 times, resulting in a remainder of 16.
Use 4 as the next digit of our solution. 
Result so far: 41110.761904
If we subtract 84 from 100, we 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.

On to step 13:
21 goes into 160 7 times with a remainder of 13.
Write down 7 as next digit of the result. 
Result so far: 41110.7619047
The remainder is 13 after subtracting 147 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Going ahead to step 14:
21 can be fit into 130 6 times, resulting in a remainder of 4.
The next digit of our result is 6. 
Result so far: 41110.76190476
Subtracting 126 from 130 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

In conclusion, the division gives 41110.76190476 with a balance of 4e-09.