947943 divided by 21 
We're looking to find how many times 21 goes into 947943.

Step 1:
If we divide 9 by 21, we get 0 and a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Append the next digit (4) from the dividend to 9 and continue with: 94 / 21

Going ahead to step 2:
21 goes into 94 4 times with a remainder of 10.
The next digit of our result is 4. 
Result so far: 4.0
The remainder is 10 after subtracting 84 from 94.
Include the next digit (7) from the dividend after 10, then repeat: 107 / 21

Advancing to step 3:
The number 21 fits into 107 5 times, leaving a remainder of 2.
Write down 5 as next digit of the result. 
Result so far: 45.0
Subtracting 105 from 107 leaves us with 2.
Bring next digit (9) of the dividend behind the 2 and repeat the process: 29 / 21

On to step 4:
If we divide 29 by 21, we get 1 and a remainder of 8.
Put 1 as the next digit of the answer. 
Result so far: 451.0
Deduct 21 from 29 and we're left with 8.
Take the next digit (4) from the dividend and append it to 8, then repeat: 84 / 21

Step 5:
21 can be fit into 84 4 times, resulting in a remainder of 0.
The number 4 becomes the next digit in our result. 
Result so far: 4514.0
Deduct 84 from 84 and we're left with 0.
Append the next digit (3) from the dividend to 0 and continue with: 3 / 21

Let's proceed to step 6:
21 can be fit into 3 0 times, resulting in a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 45140.0
Subtract 0 from 3 to get 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 7:
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: 45140.1
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.

Going ahead to step 8:
The number 21 fits into 90 4 times, leaving a remainder of 6.
The number 4 becomes the next digit in our result. 
Result so far: 45140.14
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.

Moving on to step 9:
The number 21 fits into 60 2 times, leaving a remainder of 18.
Record the quotient 2 as the next digit in the result. 
Result so far: 45140.142
Subtracting 42 from 60 leaves us 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 10:
21 can be fit into 180 8 times, resulting in a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 45140.1428
Subtract 168 from 180 to 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.

Step 11:
120 divided by 21 is 5 with a remainder of 15.
The next digit of our result is 5. 
Result so far: 45140.14285
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.

Moving on to step 12:
150 divided by 21 is 7 with a remainder of 3.
Write down 7 as next digit of the result. 
Result so far: 45140.142857
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.

Step 13:
21 can be fit into 30 1 times, resulting in a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 45140.1428571
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.

Going ahead to step 14:
When dividing 90 by 21, we get 4 with a remainder of 6.
The next digit of our result is 4. 
Result so far: 45140.14285714
Subtract 84 from 90 to 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.

In conclusion, the division gives 45140.14285714 with a balance of 6e-09.