Let's divide 49312 by 21
We're looking to find how many times 21 goes into 49312.

On to step 1:
If we divide 4 by 21, we get 0 and a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Append the next digit (9) from the dividend to 4 and continue with: 49 / 21

On to step 2:
21 goes into 49 2 times with a remainder of 7.
The next digit of our result is 2. 
Result so far: 2.0
Deduct 42 from 49 and we're left with 7.
Fetch the next digit (3) from the dividend, attach it to 7 and continue: 73 / 21

Let's proceed to step 3:
The number 21 fits into 73 3 times, leaving a remainder of 10.
Write down 3 as next digit of the result. 
Result so far: 23.0
If we take 63 away from 73, we end up with 10.
Take the next digit (1) from the dividend and append it to 10, then repeat: 101 / 21

Moving on to step 4:
When dividing 101 by 21, we get 4 with a remainder of 17.
The number 4 becomes the next digit in our result. 
Result so far: 234.0
Subtracting 84 from 101 leaves us with 17.
Include the next digit (2) from the dividend after 17, then repeat: 172 / 21

Going ahead to step 5:
172 divided by 21 is 8 with a remainder of 4.
The number 8 becomes the next digit in our result. 
Result so far: 2348.0
Deduct 168 from 172 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 6:
21 goes into 40 1 times with a remainder of 19.
Write down 1 as next digit of the result. 
Result so far: 2348.1
Deduct 21 from 40 and we're left with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Going ahead to step 7:
The number 21 fits into 190 9 times, leaving a remainder of 1.
The number 9 becomes the next digit in our result. 
Result so far: 2348.19
Subtracting 189 from 190 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 8:
If we divide 10 by 21, we get 0 and a remainder of 10.
The next digit of our result is 0. 
Result so far: 2348.19
Subtract 0 from 10 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 9:
The number 21 fits into 100 4 times, leaving a remainder of 16.
Write down 4 as next digit of the result. 
Result so far: 2348.1904
If we subtract 84 from 100, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 10:
160 divided by 21 is 7 with a remainder of 13.
Put 7 as the next digit of the answer. 
Result so far: 2348.19047
If we subtract 147 from 160, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Step 11:
21 goes into 130 6 times with a remainder of 4.
Put 6 as the next digit of the answer. 
Result so far: 2348.190476
Deduct 126 from 130 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 12:
The number 21 fits into 40 1 times, leaving a remainder of 19.
The number 1 becomes the next digit in our result. 
Result so far: 2348.1904761
Subtracting 21 from 40 leaves us with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Going ahead to step 13:
When dividing 190 by 21, we get 9 with a remainder of 1.
Record the quotient 9 as the next digit in the result. 
Result so far: 2348.19047619
The remainder is 1 after subtracting 189 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

In conclusion, the division gives 2348.19047619 with a balance of 1e-09.