657849 ÷ 12 
Our goal is to divide 657849 by 12.

Step 1:
12 goes into 6 0 times with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Grab the next digit (5) from the dividend, add it to 6, then carry on: 65 / 12

Let's proceed to step 2:
The number 12 fits into 65 5 times, leaving a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 5.0
If we subtract 60 from 65, we get 5.
Grab the next digit (7) from the dividend, add it to 5, then carry on: 57 / 12

Step 3:
The number 12 fits into 57 4 times, leaving a remainder of 9.
The next digit of our result is 4. 
Result so far: 54.0
Subtract 48 from 57 to get 9.
Take the next digit (8) from the dividend and append it to 9, then repeat: 98 / 12

Step 4:
The number 12 fits into 98 8 times, leaving a remainder of 2.
The number 8 becomes the next digit in our result. 
Result so far: 548.0
Subtract 96 from 98 to get 2.
Append the next digit (4) from the dividend to 2 and continue with: 24 / 12

On to step 5:
12 can be fit into 24 2 times, resulting in a remainder of 0.
Use 2 as the next digit of our solution. 
Result so far: 5482.0
Deduct 24 from 24 and we're left with 0.
Grab the next digit (9) from the dividend, add it to 0, then carry on: 9 / 12

On to step 6:
9 divided by 12 is 0 with a remainder of 9.
The next digit of our result is 0. 
Result so far: 54820.0
Deduct 0 from 9 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 7:
The number 12 fits into 90 7 times, leaving a remainder of 6.
Record the quotient 7 as the next digit in the result. 
Result so far: 54820.7
Deduct 84 from 90 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.

Moving on to step 8:
The number 12 fits into 60 5 times, leaving a remainder of 0.
The next digit of our result is 5. 
Result so far: 54820.75
The remainder is 0 after subtracting 60 from 60.
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: 54820.75
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:
If we divide 0 by 12, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 54820.75
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.

The final result is 54820.75 with a remainder of 0.0.