We look at the division of 21643238 by 830 
Let's see how many times 830 fits into 21643238.

Going ahead to step 1:
830 can be fit into 2 0 times, resulting in a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 830

Let's proceed to step 2:
If we divide 21 by 830, we get 0 and a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 21 after subtracting 0 from 21.
Fetch the next digit (6) from the dividend, attach it to 21 and continue: 216 / 830

Moving on to step 3:
830 goes into 216 0 times with a remainder of 216.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 216 after subtracting 0 from 216.
Include the next digit (4) from the dividend after 216, then repeat: 2164 / 830

Moving on to step 4:
The number 830 fits into 2164 2 times, leaving a remainder of 504.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtract 1660 from 2164 to get 504.
Include the next digit (3) from the dividend after 504, then repeat: 5043 / 830

Moving on to step 5:
If we divide 5043 by 830, we get 6 and a remainder of 63.
Record the quotient 6 as the next digit in the result. 
Result so far: 26.0
Subtract 4980 from 5043 to get 63.
Bring next digit (2) of the dividend behind the 63 and repeat the process: 632 / 830

Let's proceed to step 6:
If we divide 632 by 830, we get 0 and a remainder of 632.
Use 0 as the next digit of our solution. 
Result so far: 260.0
If we subtract 0 from 632, we get 632.
Fetch the next digit (3) from the dividend, attach it to 632 and continue: 6323 / 830

Step 7:
830 can be fit into 6323 7 times, resulting in a remainder of 513.
Record the quotient 7 as the next digit in the result. 
Result so far: 2607.0
Subtracting 5810 from 6323 leaves us with 513.
Take the next digit (8) from the dividend and append it to 513, then repeat: 5138 / 830

Let's proceed to step 8:
If we divide 5138 by 830, we get 6 and a remainder of 158.
Use 6 as the next digit of our solution. 
Result so far: 26076.0
If we take 4980 away from 5138, we end up with 158.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1580, and continue the process.

Going ahead to step 9:
When dividing 1580 by 830, we get 1 with a remainder of 750.
The next digit of our result is 1. 
Result so far: 26076.1
The remainder is 750 after subtracting 830 from 1580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7500, and continue the process.

Moving on to step 10:
If we divide 7500 by 830, we get 9 and a remainder of 30.
Record the quotient 9 as the next digit in the result. 
Result so far: 26076.19
If we subtract 7470 from 7500, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 11:
The number 830 fits into 300 0 times, leaving a remainder of 300.
Write down 0 as next digit of the result. 
Result so far: 26076.19
If we subtract 0 from 300, we get 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Moving on to step 12:
830 can be fit into 3000 3 times, resulting in a remainder of 510.
Record the quotient 3 as the next digit in the result. 
Result so far: 26076.1903
If we take 2490 away from 3000, we end up with 510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5100, and continue the process.

Moving on to step 13:
5100 divided by 830 is 6 with a remainder of 120.
Record the quotient 6 as the next digit in the result. 
Result so far: 26076.19036
Subtract 4980 from 5100 to get 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Going ahead to step 14:
When dividing 1200 by 830, we get 1 with a remainder of 370.
The number 1 becomes the next digit in our result. 
Result so far: 26076.190361
The remainder is 370 after subtracting 830 from 1200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3700, and continue the process.

On to step 15:
830 can be fit into 3700 4 times, resulting in a remainder of 380.
Record the quotient 4 as the next digit in the result. 
Result so far: 26076.1903614
If we subtract 3320 from 3700, we get 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

Let's proceed to step 16:
830 can be fit into 3800 4 times, resulting in a remainder of 480.
Put 4 as the next digit of the answer. 
Result so far: 26076.19036144
Deduct 3320 from 3800 and we're left with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

After the division, we end up with 26076.19036144 and a remainder of 4.8e-07.