Let's divide 21890937 by 321
Our goal is to divide 21890937 by 321.

Advancing to step 1:
When dividing 2 by 321, we get 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 321

Let's proceed to step 2:
When dividing 21 by 321, we get 0 with a remainder of 21.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 21 to get 21.
Grab the next digit (8) from the dividend, add it to 21, then carry on: 218 / 321

On to step 3:
When dividing 218 by 321, we get 0 with a remainder of 218.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 218, we end up with 218.
Append the next digit (9) from the dividend to 218 and continue with: 2189 / 321

Going ahead to step 4:
When dividing 2189 by 321, we get 6 with a remainder of 263.
Put 6 as the next digit of the answer. 
Result so far: 6.0
Subtracting 1926 from 2189 leaves us with 263.
Append the next digit (0) from the dividend to 263 and continue with: 2630 / 321

On to step 5:
321 goes into 2630 8 times with a remainder of 62.
Record the quotient 8 as the next digit in the result. 
Result so far: 68.0
Deduct 2568 from 2630 and we're left with 62.
Include the next digit (9) from the dividend after 62, then repeat: 629 / 321

Step 6:
If we divide 629 by 321, we get 1 and a remainder of 308.
Write down 1 as next digit of the result. 
Result so far: 681.0
If we subtract 321 from 629, we get 308.
Include the next digit (3) from the dividend after 308, then repeat: 3083 / 321

Going ahead to step 7:
The number 321 fits into 3083 9 times, leaving a remainder of 194.
Write down 9 as next digit of the result. 
Result so far: 6819.0
The remainder is 194 after subtracting 2889 from 3083.
Take the next digit (7) from the dividend and append it to 194, then repeat: 1947 / 321

On to step 8:
If we divide 1947 by 321, we get 6 and a remainder of 21.
Use 6 as the next digit of our solution. 
Result so far: 68196.0
Subtract 1926 from 1947 to get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Moving on to step 9:
When dividing 210 by 321, we get 0 with a remainder of 210.
Record the quotient 0 as the next digit in the result. 
Result so far: 68196.0
If we take 0 away from 210, we end up with 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Let's proceed to step 10:
When dividing 2100 by 321, we get 6 with a remainder of 174.
Record the quotient 6 as the next digit in the result. 
Result so far: 68196.06
The remainder is 174 after subtracting 1926 from 2100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1740, and continue the process.

Step 11:
The number 321 fits into 1740 5 times, leaving a remainder of 135.
Write down 5 as next digit of the result. 
Result so far: 68196.065
Deduct 1605 from 1740 and we're left with 135.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

Advancing to step 12:
321 goes into 1350 4 times with a remainder of 66.
Record the quotient 4 as the next digit in the result. 
Result so far: 68196.0654
The remainder is 66 after subtracting 1284 from 1350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Advancing to step 13:
If we divide 660 by 321, we get 2 and a remainder of 18.
The number 2 becomes the next digit in our result. 
Result so far: 68196.06542
Subtract 642 from 660 to 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.

Let's proceed to step 14:
The number 321 fits into 180 0 times, leaving a remainder of 180.
The next digit of our result is 0. 
Result so far: 68196.06542
If we subtract 0 from 180, we get 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Going ahead to step 15:
When dividing 1800 by 321, we get 5 with a remainder of 195.
Record the quotient 5 as the next digit in the result. 
Result so far: 68196.0654205
The remainder is 195 after subtracting 1605 from 1800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1950, and continue the process.

Advancing to step 16:
If we divide 1950 by 321, we get 6 and a remainder of 24.
Write down 6 as next digit of the result. 
Result so far: 68196.06542056
If we subtract 1926 from 1950, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

The final result is 68196.06542056 with a remainder of 2.4e-08.