688639 divided by 20 
Our goal is to divide 688639 by 20.

Moving on to step 1:
20 goes into 6 0 times with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Take the next digit (8) from the dividend and append it to 6, then repeat: 68 / 20

Moving on to step 2:
20 goes into 68 3 times with a remainder of 8.
Write down 3 as next digit of the result. 
Result so far: 3.0
If we subtract 60 from 68, we get 8.
Include the next digit (8) from the dividend after 8, then repeat: 88 / 20

Advancing to step 3:
20 goes into 88 4 times with a remainder of 8.
Use 4 as the next digit of our solution. 
Result so far: 34.0
If we take 80 away from 88, we end up with 8.
Bring next digit (6) of the dividend behind the 8 and repeat the process: 86 / 20

Going ahead to step 4:
When dividing 86 by 20, we get 4 with a remainder of 6.
Write down 4 as next digit of the result. 
Result so far: 344.0
If we take 80 away from 86, we end up with 6.
Bring next digit (3) of the dividend behind the 6 and repeat the process: 63 / 20

Advancing to step 5:
If we divide 63 by 20, we get 3 and a remainder of 3.
Put 3 as the next digit of the answer. 
Result so far: 3443.0
The remainder is 3 after subtracting 60 from 63.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 20

Step 6:
When dividing 39 by 20, we get 1 with a remainder of 19.
Write down 1 as next digit of the result. 
Result so far: 34431.0
Subtracting 20 from 39 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.

Advancing to step 7:
190 divided by 20 is 9 with a remainder of 10.
The number 9 becomes the next digit in our result. 
Result so far: 34431.9
Subtracting 180 from 190 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 8:
100 divided by 20 is 5 with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 34431.95
Subtract 100 from 100 to 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.

Advancing to step 9:
If we divide 0 by 20, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 34431.95
Subtract 0 from 0 to 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.

Going ahead to step 10:
The number 20 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 34431.95
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 34431.95 with a balance of 0.0.