804536 divided by 21 
Our goal is to divide 804536 by 21.

On to step 1:
21 can be fit into 8 0 times, resulting in a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Bring next digit (0) of the dividend behind the 8 and repeat the process: 80 / 21

Moving on to step 2:
When dividing 80 by 21, we get 3 with a remainder of 17.
The next digit of our result is 3. 
Result so far: 3.0
Subtract 63 from 80 to get 17.
Append the next digit (4) from the dividend to 17 and continue with: 174 / 21

On to step 3:
21 can be fit into 174 8 times, resulting in a remainder of 6.
Record the quotient 8 as the next digit in the result. 
Result so far: 38.0
If we take 168 away from 174, we end up with 6.
Take the next digit (5) from the dividend and append it to 6, then repeat: 65 / 21

Moving on to step 4:
The number 21 fits into 65 3 times, leaving a remainder of 2.
The number 3 becomes the next digit in our result. 
Result so far: 383.0
If we subtract 63 from 65, we get 2.
Include the next digit (3) from the dividend after 2, then repeat: 23 / 21

On to step 5:
23 divided by 21 is 1 with a remainder of 2.
The next digit of our result is 1. 
Result so far: 3831.0
If we take 21 away from 23, we end up with 2.
Include the next digit (6) from the dividend after 2, then repeat: 26 / 21

Advancing to step 6:
21 goes into 26 1 times with a remainder of 5.
Record the quotient 1 as the next digit in the result. 
Result so far: 38311.0
Subtracting 21 from 26 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.

Step 7:
21 goes into 50 2 times with a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 38311.2
Subtracting 42 from 50 leaves us 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.

Let's proceed to step 8:
21 can be fit into 80 3 times, resulting in a remainder of 17.
Record the quotient 3 as the next digit in the result. 
Result so far: 38311.23
Subtract 63 from 80 to 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 9:
170 divided by 21 is 8 with a remainder of 2.
Record the quotient 8 as the next digit in the result. 
Result so far: 38311.238
The remainder is 2 after subtracting 168 from 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 10:
If we divide 20 by 21, we get 0 and a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 38311.238
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 11:
21 can be fit into 200 9 times, resulting in a remainder of 11.
Record the quotient 9 as the next digit in the result. 
Result so far: 38311.23809
Subtract 189 from 200 to 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 12:
21 can be fit into 110 5 times, resulting in a remainder of 5.
The next digit of our result is 5. 
Result so far: 38311.238095
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.

Going ahead to step 13:
21 can be fit into 50 2 times, resulting in a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 38311.2380952
Subtracting 42 from 50 leaves us 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 14:
21 can be fit into 80 3 times, resulting in a remainder of 17.
Put 3 as the next digit of the answer. 
Result so far: 38311.23809523
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.

The quotient of the division is 38311.23809523, and the remainder is 1.7e-08.