We divide 606243 by 21
We want to figure out the number of times 606243 can be divided by 21.

Going ahead to step 1:
6 divided by 21 is 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Bring next digit (0) of the dividend behind the 6 and repeat the process: 60 / 21

Moving on to step 2:
If we divide 60 by 21, we get 2 and a remainder of 18.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we take 42 away from 60, we end up with 18.
Bring next digit (6) of the dividend behind the 18 and repeat the process: 186 / 21

On to step 3:
21 goes into 186 8 times with a remainder of 18.
Use 8 as the next digit of our solution. 
Result so far: 28.0
If we take 168 away from 186, we end up with 18.
Take the next digit (2) from the dividend and append it to 18, then repeat: 182 / 21

Advancing to step 4:
182 divided by 21 is 8 with a remainder of 14.
Put 8 as the next digit of the answer. 
Result so far: 288.0
Subtracting 168 from 182 leaves us with 14.
Include the next digit (4) from the dividend after 14, then repeat: 144 / 21

Moving on to step 5:
21 goes into 144 6 times with a remainder of 18.
The number 6 becomes the next digit in our result. 
Result so far: 2886.0
If we take 126 away from 144, we end up with 18.
Grab the next digit (3) from the dividend, add it to 18, then carry on: 183 / 21

Advancing to step 6:
183 divided by 21 is 8 with a remainder of 15.
Use 8 as the next digit of our solution. 
Result so far: 28868.0
If we subtract 168 from 183, we 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.

Let's proceed to step 7:
The number 21 fits into 150 7 times, leaving a remainder of 3.
The next digit of our result is 7. 
Result so far: 28868.7
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.

On to step 8:
30 divided by 21 is 1 with a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 28868.71
If we take 21 away from 30, we end up 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.

Moving on to step 9:
When dividing 90 by 21, we get 4 with a remainder of 6.
Record the quotient 4 as the next digit in the result. 
Result so far: 28868.714
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.

Moving on to step 10:
21 can be fit into 60 2 times, resulting in a remainder of 18.
Record the quotient 2 as the next digit in the result. 
Result so far: 28868.7142
Subtract 42 from 60 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.

On to step 11:
The number 21 fits into 180 8 times, leaving a remainder of 12.
Record the quotient 8 as the next digit in the result. 
Result so far: 28868.71428
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.

Step 12:
21 can be fit into 120 5 times, resulting in a remainder of 15.
Use 5 as the next digit of our solution. 
Result so far: 28868.714285
If we subtract 105 from 120, we 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 13:
If we divide 150 by 21, we get 7 and a remainder of 3.
The number 7 becomes the next digit in our result. 
Result so far: 28868.7142857
The remainder is 3 after subtracting 147 from 150.
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:
When dividing 30 by 21, we get 1 with a remainder of 9.
Use 1 as the next digit of our solution. 
Result so far: 28868.71428571
If we subtract 21 from 30, we 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.

In conclusion, the division gives 28868.71428571 with a balance of 9e-09.