We're dividing 124238 by 21 
Our goal is to divide 124238 by 21.

Advancing to step 1:
1 divided by 21 is 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 21

Let's proceed to step 2:
The number 21 fits into 12 0 times, leaving a remainder of 12.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 12 leaves us with 12.
Append the next digit (4) from the dividend to 12 and continue with: 124 / 21

Moving on to step 3:
If we divide 124 by 21, we get 5 and a remainder of 19.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
If we subtract 105 from 124, we get 19.
Take the next digit (2) from the dividend and append it to 19, then repeat: 192 / 21

On to step 4:
21 can be fit into 192 9 times, resulting in a remainder of 3.
The number 9 becomes the next digit in our result. 
Result so far: 59.0
The remainder is 3 after subtracting 189 from 192.
Fetch the next digit (3) from the dividend, attach it to 3 and continue: 33 / 21

On to step 5:
If we divide 33 by 21, we get 1 and a remainder of 12.
The next digit of our result is 1. 
Result so far: 591.0
If we subtract 21 from 33, we get 12.
Take the next digit (8) from the dividend and append it to 12, then repeat: 128 / 21

Advancing to step 6:
128 divided by 21 is 6 with a remainder of 2.
Put 6 as the next digit of the answer. 
Result so far: 5916.0
If we subtract 126 from 128, we 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.

On to step 7:
21 goes into 20 0 times with a remainder of 20.
The next digit of our result is 0. 
Result so far: 5916.0
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.

Let's proceed to step 8:
21 goes into 200 9 times with a remainder of 11.
Write down 9 as next digit of the result. 
Result so far: 5916.09
Subtract 189 from 200 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Let's proceed to step 9:
If we divide 110 by 21, we get 5 and a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 5916.095
Subtract 105 from 110 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 10:
50 divided by 21 is 2 with a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 5916.0952
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 11:
80 divided by 21 is 3 with a remainder of 17.
Record the quotient 3 as the next digit in the result. 
Result so far: 5916.09523
If we take 63 away from 80, we end up 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.

Moving on to step 12:
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: 5916.095238
If we take 168 away from 170, we end up 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.

Advancing to step 13:
When dividing 20 by 21, we get 0 with a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 5916.095238
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.

Step 14:
200 divided by 21 is 9 with a remainder of 11.
The number 9 becomes the next digit in our result. 
Result so far: 5916.09523809
If we subtract 189 from 200, we get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Our division results in 5916.09523809 with a remaining 1.1e-08.