538461 ÷ 21 
We want to divide 538461 by 21.

Step 1:
When dividing 5 by 21, we get 0 with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Grab the next digit (3) from the dividend, add it to 5, then carry on: 53 / 21

On to step 2:
21 goes into 53 2 times with a remainder of 11.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we take 42 away from 53, we end up with 11.
Bring next digit (8) of the dividend behind the 11 and repeat the process: 118 / 21

Advancing to step 3:
When dividing 118 by 21, we get 5 with a remainder of 13.
Use 5 as the next digit of our solution. 
Result so far: 25.0
The remainder is 13 after subtracting 105 from 118.
Include the next digit (4) from the dividend after 13, then repeat: 134 / 21

Moving on to step 4:
21 goes into 134 6 times with a remainder of 8.
Record the quotient 6 as the next digit in the result. 
Result so far: 256.0
Subtract 126 from 134 to get 8.
Append the next digit (6) from the dividend to 8 and continue with: 86 / 21

Going ahead to step 5:
The number 21 fits into 86 4 times, leaving a remainder of 2.
Write down 4 as next digit of the result. 
Result so far: 2564.0
Deduct 84 from 86 and we're left with 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 21

Going ahead to step 6:
21 can be fit into 21 1 times, resulting in a remainder of 0.
The next digit of our result is 1. 
Result so far: 25641.0
Subtracting 21 from 21 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 7:
21 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 25641.0
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 8:
The number 21 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 25641.0
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

In conclusion, the division gives 25641.0 with a balance of 0.0.