We divide 542363 by 21
We want to figure out the number of times 542363 can be divided by 21.

Step 1:
If we divide 5 by 21, we get 0 and a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Include the next digit (4) from the dividend after 5, then repeat: 54 / 21

Going ahead to step 2:
If we divide 54 by 21, we get 2 and a remainder of 12.
Write down 2 as next digit of the result. 
Result so far: 2.0
The remainder is 12 after subtracting 42 from 54.
Include the next digit (2) from the dividend after 12, then repeat: 122 / 21

Going ahead to step 3:
21 goes into 122 5 times with a remainder of 17.
Record the quotient 5 as the next digit in the result. 
Result so far: 25.0
Subtracting 105 from 122 leaves us with 17.
Fetch the next digit (3) from the dividend, attach it to 17 and continue: 173 / 21

Let's proceed to step 4:
21 goes into 173 8 times with a remainder of 5.
The next digit of our result is 8. 
Result so far: 258.0
If we take 168 away from 173, we end up with 5.
Append the next digit (6) from the dividend to 5 and continue with: 56 / 21

Moving on to step 5:
21 can be fit into 56 2 times, resulting in a remainder of 14.
The number 2 becomes the next digit in our result. 
Result so far: 2582.0
If we subtract 42 from 56, we get 14.
Grab the next digit (3) from the dividend, add it to 14, then carry on: 143 / 21

Let's proceed to step 6:
When dividing 143 by 21, we get 6 with a remainder of 17.
The next digit of our result is 6. 
Result so far: 25826.0
Deduct 126 from 143 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Let's proceed to step 7:
21 goes into 170 8 times with a remainder of 2.
Record the quotient 8 as the next digit in the result. 
Result so far: 25826.8
Subtract 168 from 170 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 8:
When dividing 20 by 21, we get 0 with a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 25826.8
Subtracting 0 from 20 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 9:
The number 21 fits into 200 9 times, leaving a remainder of 11.
The next digit of our result is 9. 
Result so far: 25826.809
Subtracting 189 from 200 leaves us with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Moving on to step 10:
110 divided by 21 is 5 with a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 25826.8095
Subtracting 105 from 110 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 11:
21 goes into 50 2 times with a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 25826.80952
The remainder is 8 after subtracting 42 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 12:
21 goes into 80 3 times with a remainder of 17.
Write down 3 as next digit of the result. 
Result so far: 25826.809523
Subtract 63 from 80 to get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Step 13:
If we divide 170 by 21, we get 8 and a remainder of 2.
The next digit of our result is 8. 
Result so far: 25826.8095238
Deduct 168 from 170 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 14:
When dividing 20 by 21, we get 0 with a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 25826.8095238
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

In conclusion, the division gives 25826.8095238 with a balance of 2e-08.