Let's divide 254009 by 21
We want to figure out the number of times 254009 can be divided by 21.

Moving on to step 1:
2 divided by 21 is 0 with a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Bring next digit (5) of the dividend behind the 2 and repeat the process: 25 / 21

Going ahead to step 2:
When dividing 25 by 21, we get 1 with a remainder of 4.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 21 from 25 leaves us with 4.
Take the next digit (4) from the dividend and append it to 4, then repeat: 44 / 21

Advancing to step 3:
When dividing 44 by 21, we get 2 with a remainder of 2.
Use 2 as the next digit of our solution. 
Result so far: 12.0
Deduct 42 from 44 and we're left with 2.
Fetch the next digit (0) from the dividend, attach it to 2 and continue: 20 / 21

On to step 4:
The number 21 fits into 20 0 times, leaving a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 120.0
The remainder is 20 after subtracting 0 from 20.
Fetch the next digit (0) from the dividend, attach it to 20 and continue: 200 / 21

Step 5:
The number 21 fits into 200 9 times, leaving a remainder of 11.
The next digit of our result is 9. 
Result so far: 1209.0
Subtracting 189 from 200 leaves us with 11.
Fetch the next digit (9) from the dividend, attach it to 11 and continue: 119 / 21

Going ahead to step 6:
The number 21 fits into 119 5 times, leaving a remainder of 14.
Use 5 as the next digit of our solution. 
Result so far: 12095.0
Subtracting 105 from 119 leaves us with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Going ahead to step 7:
If we divide 140 by 21, we get 6 and a remainder of 14.
Use 6 as the next digit of our solution. 
Result so far: 12095.6
Subtract 126 from 140 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Advancing to step 8:
If we divide 140 by 21, we get 6 and a remainder of 14.
The number 6 becomes the next digit in our result. 
Result so far: 12095.66
If we subtract 126 from 140, we get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

In conclusion, the division gives 12095.66 with a balance of 0.014.