We look at the division of 332931 by 21 
We want to figure out the number of times 332931 can be divided by 21.

Going ahead to step 1:
When dividing 3 by 21, we get 0 with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Grab the next digit (3) from the dividend, add it to 3, then carry on: 33 / 21

Let's proceed to step 2:
The number 21 fits into 33 1 times, leaving a remainder of 12.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 21 from 33 leaves us with 12.
Fetch the next digit (2) from the dividend, attach it to 12 and continue: 122 / 21

Let's proceed to step 3:
122 divided by 21 is 5 with a remainder of 17.
Put 5 as the next digit of the answer. 
Result so far: 15.0
Subtract 105 from 122 to get 17.
Include the next digit (9) from the dividend after 17, then repeat: 179 / 21

On to step 4:
When dividing 179 by 21, we get 8 with a remainder of 11.
Use 8 as the next digit of our solution. 
Result so far: 158.0
If we subtract 168 from 179, we get 11.
Bring next digit (3) of the dividend behind the 11 and repeat the process: 113 / 21

Going ahead to step 5:
113 divided by 21 is 5 with a remainder of 8.
Record the quotient 5 as the next digit in the result. 
Result so far: 1585.0
The remainder is 8 after subtracting 105 from 113.
Fetch the next digit (1) from the dividend, attach it to 8 and continue: 81 / 21

Moving on to step 6:
If we divide 81 by 21, we get 3 and a remainder of 18.
The number 3 becomes the next digit in our result. 
Result so far: 15853.0
The remainder is 18 after subtracting 63 from 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Advancing to step 7:
If we divide 180 by 21, we get 8 and a remainder of 12.
Record the quotient 8 as the next digit in the result. 
Result so far: 15853.8
If we subtract 168 from 180, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 8:
120 divided by 21 is 5 with a remainder of 15.
Use 5 as the next digit of our solution. 
Result so far: 15853.85
Deduct 105 from 120 and we're left with 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:
The number 21 fits into 150 7 times, leaving a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 15853.857
Subtracting 147 from 150 leaves us with 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:
The number 21 fits into 30 1 times, leaving a remainder of 9.
Use 1 as the next digit of our solution. 
Result so far: 15853.8571
Deduct 21 from 30 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 11:
90 divided by 21 is 4 with a remainder of 6.
Use 4 as the next digit of our solution. 
Result so far: 15853.85714
If we subtract 84 from 90, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 12:
60 divided by 21 is 2 with a remainder of 18.
The number 2 becomes the next digit in our result. 
Result so far: 15853.857142
Deduct 42 from 60 and we're left 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.

Moving on to step 13:
21 goes into 180 8 times with a remainder of 12.
Put 8 as the next digit of the answer. 
Result so far: 15853.8571428
Subtracting 168 from 180 leaves us 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.

Going ahead to step 14:
21 goes into 120 5 times with a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 15853.85714285
Subtracting 105 from 120 leaves us with 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 15853.85714285 with a remainder of 1.5e-08.