Let's divide 381346 by 21
Let's see how many times 21 fits into 381346.

Moving on to step 1:
3 divided by 21 is 0 with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Append the next digit (8) from the dividend to 3 and continue with: 38 / 21

Moving on to step 2:
21 can be fit into 38 1 times, resulting in a remainder of 17.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 21 from 38, we get 17.
Take the next digit (1) from the dividend and append it to 17, then repeat: 171 / 21

On to step 3:
21 can be fit into 171 8 times, resulting in a remainder of 3.
Put 8 as the next digit of the answer. 
Result so far: 18.0
If we take 168 away from 171, we end up with 3.
Grab the next digit (3) from the dividend, add it to 3, then carry on: 33 / 21

Let's proceed to step 4:
21 goes into 33 1 times with a remainder of 12.
Record the quotient 1 as the next digit in the result. 
Result so far: 181.0
Subtract 21 from 33 to get 12.
Fetch the next digit (4) from the dividend, attach it to 12 and continue: 124 / 21

Moving on to step 5:
21 goes into 124 5 times with a remainder of 19.
The number 5 becomes the next digit in our result. 
Result so far: 1815.0
Subtract 105 from 124 to get 19.
Fetch the next digit (6) from the dividend, attach it to 19 and continue: 196 / 21

On to step 6:
196 divided by 21 is 9 with a remainder of 7.
The next digit of our result is 9. 
Result so far: 18159.0
Subtracting 189 from 196 leaves us with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Going ahead to step 7:
21 goes into 70 3 times with a remainder of 7.
Write down 3 as next digit of the result. 
Result so far: 18159.3
Deduct 63 from 70 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 8:
The number 21 fits into 70 3 times, leaving a remainder of 7.
Write down 3 as next digit of the result. 
Result so far: 18159.33
Subtract 63 from 70 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Our division results in 18159.33 with a remaining 0.007.