We look at the division of 21739 by 68 
Let's see how many times 68 fits into 21739.

Step 1:
2 divided by 68 is 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 68

On to step 2:
If we divide 21 by 68, we get 0 and a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Bring next digit (7) of the dividend behind the 21 and repeat the process: 217 / 68

Let's proceed to step 3:
When dividing 217 by 68, we get 3 with a remainder of 13.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Subtract 204 from 217 to get 13.
Bring next digit (3) of the dividend behind the 13 and repeat the process: 133 / 68

Moving on to step 4:
68 can be fit into 133 1 times, resulting in a remainder of 65.
The next digit of our result is 1. 
Result so far: 31.0
Deduct 68 from 133 and we're left with 65.
Append the next digit (9) from the dividend to 65 and continue with: 659 / 68

Advancing to step 5:
68 goes into 659 9 times with a remainder of 47.
Record the quotient 9 as the next digit in the result. 
Result so far: 319.0
If we subtract 612 from 659, we get 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

On to step 6:
68 can be fit into 470 6 times, resulting in a remainder of 62.
Write down 6 as next digit of the result. 
Result so far: 319.6
The remainder is 62 after subtracting 408 from 470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Moving on to step 7:
68 goes into 620 9 times with a remainder of 8.
Write down 9 as next digit of the result. 
Result so far: 319.69
Subtract 612 from 620 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 8:
80 divided by 68 is 1 with a remainder of 12.
The number 1 becomes the next digit in our result. 
Result so far: 319.691
Subtract 68 from 80 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 9:
When dividing 120 by 68, we get 1 with a remainder of 52.
The next digit of our result is 1. 
Result so far: 319.6911
If we take 68 away from 120, we end up with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Our division results in 319.6911 with a remaining 0.00052.