We divide 387298 by 21
Our goal is to divide 387298 by 21.

Moving on to step 1:
3 divided by 21 is 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Take the next digit (8) from the dividend and append it to 3, then repeat: 38 / 21

Step 2:
38 divided by 21 is 1 with a remainder of 17.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 21 from 38 to get 17.
Append the next digit (7) from the dividend to 17 and continue with: 177 / 21

On to step 3:
The number 21 fits into 177 8 times, leaving a remainder of 9.
Put 8 as the next digit of the answer. 
Result so far: 18.0
Deduct 168 from 177 and we're left with 9.
Take the next digit (2) from the dividend and append it to 9, then repeat: 92 / 21

Let's proceed to step 4:
The number 21 fits into 92 4 times, leaving a remainder of 8.
Record the quotient 4 as the next digit in the result. 
Result so far: 184.0
The remainder is 8 after subtracting 84 from 92.
Fetch the next digit (9) from the dividend, attach it to 8 and continue: 89 / 21

Let's proceed to step 5:
21 can be fit into 89 4 times, resulting in a remainder of 5.
The number 4 becomes the next digit in our result. 
Result so far: 1844.0
The remainder is 5 after subtracting 84 from 89.
Grab the next digit (8) from the dividend, add it to 5, then carry on: 58 / 21

Step 6:
58 divided by 21 is 2 with a remainder of 16.
The number 2 becomes the next digit in our result. 
Result so far: 18442.0
If we take 42 away from 58, 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.

Going ahead to step 7:
21 can be fit into 160 7 times, resulting in a remainder of 13.
Record the quotient 7 as the next digit in the result. 
Result so far: 18442.7
The remainder is 13 after subtracting 147 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Going ahead to step 8:
The number 21 fits into 130 6 times, leaving a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 18442.76
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.

Moving on to step 9:
When dividing 40 by 21, we get 1 with a remainder of 19.
The number 1 becomes the next digit in our result. 
Result so far: 18442.761
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.

Let's proceed to step 10:
If we divide 190 by 21, we get 9 and a remainder of 1.
The next digit of our result is 9. 
Result so far: 18442.7619
Subtracting 189 from 190 leaves us 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.

Going ahead to step 11:
21 can be fit into 10 0 times, resulting in a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 18442.7619
If we subtract 0 from 10, we 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.

Moving on to step 12:
If we divide 100 by 21, we get 4 and a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 18442.761904
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 13:
21 goes into 160 7 times with a remainder of 13.
The number 7 becomes the next digit in our result. 
Result so far: 18442.7619047
If we take 147 away from 160, we end up 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.

Step 14:
130 divided by 21 is 6 with a remainder of 4.
Write down 6 as next digit of the result. 
Result so far: 18442.76190476
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.

The final outcome is 18442.76190476, with a leftover of 4e-09.