We look at the division of 85564067 by 21 
We want to divide 85564067 by 21.

Moving on to step 1:
8 divided by 21 is 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Grab the next digit (5) from the dividend, add it to 8, then carry on: 85 / 21

Moving on to step 2:
When dividing 85 by 21, we get 4 with a remainder of 1.
Write down 4 as next digit of the result. 
Result so far: 4.0
If we subtract 84 from 85, we get 1.
Fetch the next digit (5) from the dividend, attach it to 1 and continue: 15 / 21

On to step 3:
15 divided by 21 is 0 with a remainder of 15.
Use 0 as the next digit of our solution. 
Result so far: 40.0
The remainder is 15 after subtracting 0 from 15.
Bring next digit (6) of the dividend behind the 15 and repeat the process: 156 / 21

Going ahead to step 4:
When dividing 156 by 21, we get 7 with a remainder of 9.
Put 7 as the next digit of the answer. 
Result so far: 407.0
Deduct 147 from 156 and we're left with 9.
Include the next digit (4) from the dividend after 9, then repeat: 94 / 21

Let's proceed to step 5:
21 can be fit into 94 4 times, resulting in a remainder of 10.
Write down 4 as next digit of the result. 
Result so far: 4074.0
Deduct 84 from 94 and we're left with 10.
Fetch the next digit (0) from the dividend, attach it to 10 and continue: 100 / 21

On to step 6:
When dividing 100 by 21, we get 4 with a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 40744.0
The remainder is 16 after subtracting 84 from 100.
Take the next digit (6) from the dividend and append it to 16, then repeat: 166 / 21

Going ahead to step 7:
When dividing 166 by 21, we get 7 with a remainder of 19.
Write down 7 as next digit of the result. 
Result so far: 407447.0
Subtract 147 from 166 to get 19.
Bring next digit (7) of the dividend behind the 19 and repeat the process: 197 / 21

Moving on to step 8:
The number 21 fits into 197 9 times, leaving a remainder of 8.
The next digit of our result is 9. 
Result so far: 4074479.0
Deduct 189 from 197 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 9:
The number 21 fits into 80 3 times, leaving a remainder of 17.
Write down 3 as next digit of the result. 
Result so far: 4074479.3
If we subtract 63 from 80, we get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Going ahead to step 10:
When dividing 170 by 21, we get 8 with a remainder of 2.
The next digit of our result is 8. 
Result so far: 4074479.38
Subtracting 168 from 170 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 11:
21 can be fit into 20 0 times, resulting in a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 4074479.38
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 12:
If we divide 200 by 21, we get 9 and a remainder of 11.
The next digit of our result is 9. 
Result so far: 4074479.3809
If we subtract 189 from 200, we get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Moving on to step 13:
21 goes into 110 5 times with a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 4074479.38095
Subtracting 105 from 110 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 14:
50 divided by 21 is 2 with a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 4074479.380952
Deduct 42 from 50 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 15:
21 can be fit into 80 3 times, resulting in a remainder of 17.
The number 3 becomes the next digit in our result. 
Result so far: 4074479.3809523
Subtracting 63 from 80 leaves us with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Let's proceed to step 16:
If we divide 170 by 21, we get 8 and a remainder of 2.
Write down 8 as next digit of the result. 
Result so far: 4074479.38095238
Subtracting 168 from 170 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

The final outcome is 4074479.38095238, with a leftover of 2e-09.