We're dividing 12860510 by 404 
Let's see how many times 404 fits into 12860510.

On to step 1:
404 goes into 1 0 times with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 404

Moving on to step 2:
404 goes into 12 0 times with a remainder of 12.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 12 leaves us with 12.
Append the next digit (8) from the dividend to 12 and continue with: 128 / 404

Advancing to step 3:
128 divided by 404 is 0 with a remainder of 128.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 128, we end up with 128.
Include the next digit (6) from the dividend after 128, then repeat: 1286 / 404

Going ahead to step 4:
The number 404 fits into 1286 3 times, leaving a remainder of 74.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Subtracting 1212 from 1286 leaves us with 74.
Fetch the next digit (0) from the dividend, attach it to 74 and continue: 740 / 404

Going ahead to step 5:
404 can be fit into 740 1 times, resulting in a remainder of 336.
Write down 1 as next digit of the result. 
Result so far: 31.0
Subtract 404 from 740 to get 336.
Include the next digit (5) from the dividend after 336, then repeat: 3365 / 404

On to step 6:
If we divide 3365 by 404, we get 8 and a remainder of 133.
Record the quotient 8 as the next digit in the result. 
Result so far: 318.0
The remainder is 133 after subtracting 3232 from 3365.
Bring next digit (1) of the dividend behind the 133 and repeat the process: 1331 / 404

Step 7:
1331 divided by 404 is 3 with a remainder of 119.
The number 3 becomes the next digit in our result. 
Result so far: 3183.0
Deduct 1212 from 1331 and we're left with 119.
Include the next digit (0) from the dividend after 119, then repeat: 1190 / 404

Step 8:
When dividing 1190 by 404, we get 2 with a remainder of 382.
The number 2 becomes the next digit in our result. 
Result so far: 31832.0
The remainder is 382 after subtracting 808 from 1190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3820, and continue the process.

Moving on to step 9:
404 can be fit into 3820 9 times, resulting in a remainder of 184.
The number 9 becomes the next digit in our result. 
Result so far: 31832.9
If we subtract 3636 from 3820, we get 184.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

Advancing to step 10:
When dividing 1840 by 404, we get 4 with a remainder of 224.
Write down 4 as next digit of the result. 
Result so far: 31832.94
The remainder is 224 after subtracting 1616 from 1840.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2240, and continue the process.

On to step 11:
404 can be fit into 2240 5 times, resulting in a remainder of 220.
Put 5 as the next digit of the answer. 
Result so far: 31832.945
The remainder is 220 after subtracting 2020 from 2240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Advancing to step 12:
404 can be fit into 2200 5 times, resulting in a remainder of 180.
Use 5 as the next digit of our solution. 
Result so far: 31832.9455
Subtract 2020 from 2200 to get 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

The final result is 31832.9455 with a remainder of 0.0018.