We look at the division of 946968 by 21 
We want to divide 946968 by 21.

Step 1:
The number 21 fits into 9 0 times, leaving a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Grab the next digit (4) from the dividend, add it to 9, then carry on: 94 / 21

Moving on to step 2:
21 goes into 94 4 times with a remainder of 10.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
If we subtract 84 from 94, we get 10.
Grab the next digit (6) from the dividend, add it to 10, then carry on: 106 / 21

Advancing to step 3:
The number 21 fits into 106 5 times, leaving a remainder of 1.
Put 5 as the next digit of the answer. 
Result so far: 45.0
The remainder is 1 after subtracting 105 from 106.
Grab the next digit (9) from the dividend, add it to 1, then carry on: 19 / 21

On to step 4:
21 goes into 19 0 times with a remainder of 19.
Put 0 as the next digit of the answer. 
Result so far: 450.0
If we subtract 0 from 19, we get 19.
Bring next digit (6) of the dividend behind the 19 and repeat the process: 196 / 21

Moving on to step 5:
21 goes into 196 9 times with a remainder of 7.
Put 9 as the next digit of the answer. 
Result so far: 4509.0
If we take 189 away from 196, we end up with 7.
Take the next digit (8) from the dividend and append it to 7, then repeat: 78 / 21

Let's proceed to step 6:
The number 21 fits into 78 3 times, leaving a remainder of 15.
The next digit of our result is 3. 
Result so far: 45093.0
Subtract 63 from 78 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 7:
21 can be fit into 150 7 times, resulting in a remainder of 3.
Write down 7 as next digit of the result. 
Result so far: 45093.7
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.

Moving on to step 8:
The number 21 fits into 30 1 times, leaving a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 45093.71
The remainder is 9 after subtracting 21 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 9:
When dividing 90 by 21, we get 4 with a remainder of 6.
The number 4 becomes the next digit in our result. 
Result so far: 45093.714
The remainder is 6 after subtracting 84 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 10:
21 goes into 60 2 times with a remainder of 18.
The next digit of our result is 2. 
Result so far: 45093.7142
If we take 42 away from 60, we end up 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.

Let's proceed to step 11:
21 can be fit into 180 8 times, resulting in a remainder of 12.
Put 8 as the next digit of the answer. 
Result so far: 45093.71428
The remainder is 12 after subtracting 168 from 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 12:
120 divided by 21 is 5 with a remainder of 15.
Put 5 as the next digit of the answer. 
Result so far: 45093.714285
The remainder is 15 after subtracting 105 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 13:
21 goes into 150 7 times with a remainder of 3.
The next digit of our result is 7. 
Result so far: 45093.7142857
If we take 147 away from 150, we end up 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.

Going ahead to step 14:
30 divided by 21 is 1 with a remainder of 9.
Put 1 as the next digit of the answer. 
Result so far: 45093.71428571
Subtract 21 from 30 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

After the division, we end up with 45093.71428571 and a remainder of 9e-09.