We're dividing 12574618 by 315 
We want to divide 12574618 by 315.

Step 1:
1 divided by 315 is 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 315

Let's proceed to step 2:
The number 315 fits into 12 0 times, leaving a remainder of 12.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 12, we get 12.
Include the next digit (5) from the dividend after 12, then repeat: 125 / 315

On to step 3:
315 can be fit into 125 0 times, resulting in a remainder of 125.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 125 and we're left with 125.
Take the next digit (7) from the dividend and append it to 125, then repeat: 1257 / 315

Step 4:
1257 divided by 315 is 3 with a remainder of 312.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Subtract 945 from 1257 to get 312.
Fetch the next digit (4) from the dividend, attach it to 312 and continue: 3124 / 315

Going ahead to step 5:
3124 divided by 315 is 9 with a remainder of 289.
The number 9 becomes the next digit in our result. 
Result so far: 39.0
Subtract 2835 from 3124 to get 289.
Fetch the next digit (6) from the dividend, attach it to 289 and continue: 2896 / 315

Let's proceed to step 6:
If we divide 2896 by 315, we get 9 and a remainder of 61.
Use 9 as the next digit of our solution. 
Result so far: 399.0
Subtracting 2835 from 2896 leaves us with 61.
Fetch the next digit (1) from the dividend, attach it to 61 and continue: 611 / 315

On to step 7:
611 divided by 315 is 1 with a remainder of 296.
Use 1 as the next digit of our solution. 
Result so far: 3991.0
If we take 315 away from 611, we end up with 296.
Append the next digit (8) from the dividend to 296 and continue with: 2968 / 315

Let's proceed to step 8:
If we divide 2968 by 315, we get 9 and a remainder of 133.
Record the quotient 9 as the next digit in the result. 
Result so far: 39919.0
Deduct 2835 from 2968 and we're left with 133.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1330, and continue the process.

Going ahead to step 9:
1330 divided by 315 is 4 with a remainder of 70.
The number 4 becomes the next digit in our result. 
Result so far: 39919.4
If we subtract 1260 from 1330, we get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Step 10:
315 goes into 700 2 times with a remainder of 70.
The number 2 becomes the next digit in our result. 
Result so far: 39919.42
The remainder is 70 after subtracting 630 from 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Step 11:
315 can be fit into 700 2 times, resulting in a remainder of 70.
The next digit of our result is 2. 
Result so far: 39919.422
If we take 630 away from 700, we end up with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

The final result is 39919.422 with a remainder of 0.007.