257402 divided by 12 
We're looking to find how many times 12 goes into 257402.

Advancing to step 1:
12 can be fit into 2 0 times, resulting in a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Include the next digit (5) from the dividend after 2, then repeat: 25 / 12

On to step 2:
12 can be fit into 25 2 times, resulting in a remainder of 1.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we take 24 away from 25, we end up with 1.
Append the next digit (7) from the dividend to 1 and continue with: 17 / 12

Advancing to step 3:
The number 12 fits into 17 1 times, leaving a remainder of 5.
Write down 1 as next digit of the result. 
Result so far: 21.0
If we subtract 12 from 17, we get 5.
Take the next digit (4) from the dividend and append it to 5, then repeat: 54 / 12

Step 4:
12 goes into 54 4 times with a remainder of 6.
Write down 4 as next digit of the result. 
Result so far: 214.0
The remainder is 6 after subtracting 48 from 54.
Append the next digit (0) from the dividend to 6 and continue with: 60 / 12

Going ahead to step 5:
The number 12 fits into 60 5 times, leaving a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 2145.0
The remainder is 0 after subtracting 60 from 60.
Include the next digit (2) from the dividend after 0, then repeat: 2 / 12

Moving on to step 6:
12 can be fit into 2 0 times, resulting in a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 21450.0
Subtracting 0 from 2 leaves us 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.

Moving on to step 7:
When dividing 20 by 12, we get 1 with a remainder of 8.
Record the quotient 1 as the next digit in the result. 
Result so far: 21450.1
Subtracting 12 from 20 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 8:
12 goes into 80 6 times with a remainder of 8.
Use 6 as the next digit of our solution. 
Result so far: 21450.16
Deduct 72 from 80 and we're left 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.

Going ahead to step 9:
When dividing 80 by 12, we get 6 with a remainder of 8.
The next digit of our result is 6. 
Result so far: 21450.166
If we take 72 away from 80, we end up 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.

The final result is 21450.166 with a remainder of 0.0008.