688863 divided by 12 
Let's see how many times 12 fits into 688863.

Step 1:
When dividing 6 by 12, we get 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Take the next digit (8) from the dividend and append it to 6, then repeat: 68 / 12

Step 2:
The number 12 fits into 68 5 times, leaving a remainder of 8.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
If we take 60 away from 68, we end up with 8.
Include the next digit (8) from the dividend after 8, then repeat: 88 / 12

Let's proceed to step 3:
The number 12 fits into 88 7 times, leaving a remainder of 4.
Use 7 as the next digit of our solution. 
Result so far: 57.0
The remainder is 4 after subtracting 84 from 88.
Append the next digit (8) from the dividend to 4 and continue with: 48 / 12

Moving on to step 4:
The number 12 fits into 48 4 times, leaving a remainder of 0.
Use 4 as the next digit of our solution. 
Result so far: 574.0
The remainder is 0 after subtracting 48 from 48.
Fetch the next digit (6) from the dividend, attach it to 0 and continue: 6 / 12

Step 5:
When dividing 6 by 12, we get 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 5740.0
If we subtract 0 from 6, we get 6.
Include the next digit (3) from the dividend after 6, then repeat: 63 / 12

Going ahead to step 6:
The number 12 fits into 63 5 times, leaving a remainder of 3.
Put 5 as the next digit of the answer. 
Result so far: 57405.0
If we subtract 60 from 63, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 7:
The number 12 fits into 30 2 times, leaving a remainder of 6.
Put 2 as the next digit of the answer. 
Result so far: 57405.2
Deduct 24 from 30 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 8:
If we divide 60 by 12, we get 5 and a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 57405.25
Deduct 60 from 60 and we're left with 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:
12 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 57405.25
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 10:
If we divide 0 by 12, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 57405.25
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 57405.25, with a leftover of 0.0.