Let's divide 394672 by 21
We're looking to find how many times 21 goes into 394672.

Step 1:
When dividing 3 by 21, we get 0 with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Take the next digit (9) from the dividend and append it to 3, then repeat: 39 / 21

On to step 2:
When dividing 39 by 21, we get 1 with a remainder of 18.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 21 from 39 and we're left with 18.
Append the next digit (4) from the dividend to 18 and continue with: 184 / 21

Advancing to step 3:
If we divide 184 by 21, we get 8 and a remainder of 16.
The number 8 becomes the next digit in our result. 
Result so far: 18.0
If we take 168 away from 184, we end up with 16.
Include the next digit (6) from the dividend after 16, then repeat: 166 / 21

Advancing to step 4:
When dividing 166 by 21, we get 7 with a remainder of 19.
The next digit of our result is 7. 
Result so far: 187.0
The remainder is 19 after subtracting 147 from 166.
Grab the next digit (7) from the dividend, add it to 19, then carry on: 197 / 21

Let's proceed to step 5:
21 can be fit into 197 9 times, resulting in a remainder of 8.
Write down 9 as next digit of the result. 
Result so far: 1879.0
If we subtract 189 from 197, we get 8.
Take the next digit (2) from the dividend and append it to 8, then repeat: 82 / 21

On to step 6:
21 can be fit into 82 3 times, resulting in a remainder of 19.
Record the quotient 3 as the next digit in the result. 
Result so far: 18793.0
If we take 63 away from 82, 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.

Going ahead to step 7:
When dividing 190 by 21, we get 9 with a remainder of 1.
Record the quotient 9 as the next digit in the result. 
Result so far: 18793.9
If we take 189 away from 190, we end up 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.

On to step 8:
10 divided by 21 is 0 with a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 18793.9
Subtract 0 from 10 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 9:
If we divide 100 by 21, we get 4 and a remainder of 16.
The next digit of our result is 4. 
Result so far: 18793.904
The remainder is 16 after subtracting 84 from 100.
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 10:
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: 18793.9047
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 11:
If we divide 130 by 21, we get 6 and a remainder of 4.
Put 6 as the next digit of the answer. 
Result so far: 18793.90476
Subtract 126 from 130 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.

Let's proceed to step 12:
21 goes into 40 1 times with a remainder of 19.
Write down 1 as next digit of the result. 
Result so far: 18793.904761
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.

Moving on to step 13:
When dividing 190 by 21, we get 9 with a remainder of 1.
The number 9 becomes the next digit in our result. 
Result so far: 18793.9047619
If we take 189 away from 190, we end up 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.

On to step 14:
21 can be fit into 10 0 times, resulting in a remainder of 10.
The next digit of our result is 0. 
Result so far: 18793.9047619
Deduct 0 from 10 and we're left 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.

The quotient of the division is 18793.9047619, and the remainder is 1e-08.