We divide 257606 by 12
Our goal is to divide 257606 by 12.

Step 1:
The number 12 fits into 2 0 times, leaving a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Bring next digit (5) of the dividend behind the 2 and repeat the process: 25 / 12

On to step 2:
12 can be fit into 25 2 times, resulting in a remainder of 1.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtract 24 from 25 to get 1.
Grab the next digit (7) from the dividend, add it to 1, then carry on: 17 / 12

Moving on to step 3:
12 can be fit into 17 1 times, resulting in a remainder of 5.
Use 1 as the next digit of our solution. 
Result so far: 21.0
Subtract 12 from 17 to get 5.
Include the next digit (6) from the dividend after 5, then repeat: 56 / 12

Going ahead to step 4:
The number 12 fits into 56 4 times, leaving a remainder of 8.
Use 4 as the next digit of our solution. 
Result so far: 214.0
Subtracting 48 from 56 leaves us with 8.
Bring next digit (0) of the dividend behind the 8 and repeat the process: 80 / 12

Let's proceed to step 5:
When dividing 80 by 12, we get 6 with a remainder of 8.
Put 6 as the next digit of the answer. 
Result so far: 2146.0
The remainder is 8 after subtracting 72 from 80.
Grab the next digit (6) from the dividend, add it to 8, then carry on: 86 / 12

Moving on to step 6:
12 can be fit into 86 7 times, resulting in a remainder of 2.
The next digit of our result is 7. 
Result so far: 21467.0
Deduct 84 from 86 and we're left 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.

Step 7:
12 can be fit into 20 1 times, resulting in a remainder of 8.
The number 1 becomes the next digit in our result. 
Result so far: 21467.1
If we subtract 12 from 20, we 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.

Moving on to step 8:
80 divided by 12 is 6 with a remainder of 8.
Put 6 as the next digit of the answer. 
Result so far: 21467.16
Subtracting 72 from 80 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 9:
80 divided by 12 is 6 with a remainder of 8.
Write down 6 as next digit of the result. 
Result so far: 21467.166
If we subtract 72 from 80, we 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.

The final outcome is 21467.166, with a leftover of 0.0008.