We divide 380916 by 21
Our goal is to divide 380916 by 21.

On to step 1:
3 divided by 21 is 0 with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Include the next digit (8) from the dividend after 3, then repeat: 38 / 21

Let's proceed to step 2:
When dividing 38 by 21, we get 1 with a remainder of 17.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 21 from 38 and we're left with 17.
Bring next digit (0) of the dividend behind the 17 and repeat the process: 170 / 21

Moving on to step 3:
170 divided by 21 is 8 with a remainder of 2.
Write down 8 as next digit of the result. 
Result so far: 18.0
Deduct 168 from 170 and we're left with 2.
Append the next digit (9) from the dividend to 2 and continue with: 29 / 21

Step 4:
The number 21 fits into 29 1 times, leaving a remainder of 8.
Use 1 as the next digit of our solution. 
Result so far: 181.0
Deduct 21 from 29 and we're left with 8.
Bring next digit (1) of the dividend behind the 8 and repeat the process: 81 / 21

On to step 5:
The number 21 fits into 81 3 times, leaving a remainder of 18.
Put 3 as the next digit of the answer. 
Result so far: 1813.0
If we subtract 63 from 81, we get 18.
Fetch the next digit (6) from the dividend, attach it to 18 and continue: 186 / 21

Step 6:
21 can be fit into 186 8 times, resulting in a remainder of 18.
Put 8 as the next digit of the answer. 
Result so far: 18138.0
If we subtract 168 from 186, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 7:
If we divide 180 by 21, we get 8 and a remainder of 12.
The number 8 becomes the next digit in our result. 
Result so far: 18138.8
The remainder is 12 after subtracting 168 from 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 8:
120 divided by 21 is 5 with a remainder of 15.
The next digit of our result is 5. 
Result so far: 18138.85
If we subtract 105 from 120, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 9:
When dividing 150 by 21, we get 7 with a remainder of 3.
The next digit of our result is 7. 
Result so far: 18138.857
If we subtract 147 from 150, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 10:
When dividing 30 by 21, we get 1 with a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 18138.8571
If we subtract 21 from 30, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 11:
21 goes into 90 4 times with a remainder of 6.
Write down 4 as next digit of the result. 
Result so far: 18138.85714
Subtracting 84 from 90 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 12:
When dividing 60 by 21, we get 2 with a remainder of 18.
Put 2 as the next digit of the answer. 
Result so far: 18138.857142
Subtracting 42 from 60 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 13:
When dividing 180 by 21, we get 8 with a remainder of 12.
Put 8 as the next digit of the answer. 
Result so far: 18138.8571428
If we take 168 away from 180, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 14:
If we divide 120 by 21, we get 5 and a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 18138.85714285
Subtract 105 from 120 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

The final result is 18138.85714285 with a remainder of 1.5e-08.