We look at the division of 885436 by 21 
Let's see how many times 21 fits into 885436.

Moving on to step 1:
When dividing 8 by 21, we get 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Take the next digit (8) from the dividend and append it to 8, then repeat: 88 / 21

On to step 2:
When dividing 88 by 21, we get 4 with a remainder of 4.
Write down 4 as next digit of the result. 
Result so far: 4.0
Subtracting 84 from 88 leaves us with 4.
Grab the next digit (5) from the dividend, add it to 4, then carry on: 45 / 21

On to step 3:
If we divide 45 by 21, we get 2 and a remainder of 3.
Write down 2 as next digit of the result. 
Result so far: 42.0
Deduct 42 from 45 and we're left with 3.
Append the next digit (4) from the dividend to 3 and continue with: 34 / 21

Moving on to step 4:
When dividing 34 by 21, we get 1 with a remainder of 13.
The number 1 becomes the next digit in our result. 
Result so far: 421.0
The remainder is 13 after subtracting 21 from 34.
Bring next digit (3) of the dividend behind the 13 and repeat the process: 133 / 21

Advancing to step 5:
21 can be fit into 133 6 times, resulting in a remainder of 7.
Use 6 as the next digit of our solution. 
Result so far: 4216.0
If we take 126 away from 133, we end up with 7.
Fetch the next digit (6) from the dividend, attach it to 7 and continue: 76 / 21

On to step 6:
If we divide 76 by 21, we get 3 and a remainder of 13.
Put 3 as the next digit of the answer. 
Result so far: 42163.0
Subtracting 63 from 76 leaves us 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.

Moving on to step 7:
The number 21 fits into 130 6 times, leaving a remainder of 4.
Use 6 as the next digit of our solution. 
Result so far: 42163.6
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.

Moving on to step 8:
40 divided by 21 is 1 with a remainder of 19.
Use 1 as the next digit of our solution. 
Result so far: 42163.61
Subtracting 21 from 40 leaves us 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.

Advancing to step 9:
If we divide 190 by 21, we get 9 and a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 42163.619
Subtract 189 from 190 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 10:
When dividing 10 by 21, we get 0 with a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 42163.619
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 11:
21 goes into 100 4 times with a remainder of 16.
Put 4 as the next digit of the answer. 
Result so far: 42163.61904
If we take 84 away from 100, we end up with 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 12:
When dividing 160 by 21, we get 7 with a remainder of 13.
Use 7 as the next digit of our solution. 
Result so far: 42163.619047
Deduct 147 from 160 and we're left 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.

Moving on to step 13:
21 can be fit into 130 6 times, resulting in a remainder of 4.
Record the quotient 6 as the next digit in the result. 
Result so far: 42163.6190476
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.

Advancing to step 14:
40 divided by 21 is 1 with a remainder of 19.
The number 1 becomes the next digit in our result. 
Result so far: 42163.61904761
If we take 21 away from 40, we end up 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.

The final result is 42163.61904761 with a remainder of 1.9e-08.