We're dividing 12415878 by 285 
We're looking to find how many times 285 goes into 12415878.

Moving on to step 1:
285 goes into 1 0 times with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Fetch the next digit (2) from the dividend, attach it to 1 and continue: 12 / 285

Going ahead to step 2:
The number 285 fits into 12 0 times, leaving a remainder of 12.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 12, we get 12.
Append the next digit (4) from the dividend to 12 and continue with: 124 / 285

Step 3:
When dividing 124 by 285, we get 0 with a remainder of 124.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 124 and we're left with 124.
Include the next digit (1) from the dividend after 124, then repeat: 1241 / 285

Step 4:
When dividing 1241 by 285, we get 4 with a remainder of 101.
The next digit of our result is 4. 
Result so far: 4.0
The remainder is 101 after subtracting 1140 from 1241.
Include the next digit (5) from the dividend after 101, then repeat: 1015 / 285

Let's proceed to step 5:
If we divide 1015 by 285, we get 3 and a remainder of 160.
Record the quotient 3 as the next digit in the result. 
Result so far: 43.0
Subtracting 855 from 1015 leaves us with 160.
Include the next digit (8) from the dividend after 160, then repeat: 1608 / 285

Going ahead to step 6:
1608 divided by 285 is 5 with a remainder of 183.
The number 5 becomes the next digit in our result. 
Result so far: 435.0
Subtracting 1425 from 1608 leaves us with 183.
Bring next digit (7) of the dividend behind the 183 and repeat the process: 1837 / 285

Let's proceed to step 7:
When dividing 1837 by 285, we get 6 with a remainder of 127.
The next digit of our result is 6. 
Result so far: 4356.0
Subtract 1710 from 1837 to get 127.
Include the next digit (8) from the dividend after 127, then repeat: 1278 / 285

On to step 8:
When dividing 1278 by 285, we get 4 with a remainder of 138.
The number 4 becomes the next digit in our result. 
Result so far: 43564.0
Subtracting 1140 from 1278 leaves us with 138.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1380, and continue the process.

Moving on to step 9:
When dividing 1380 by 285, we get 4 with a remainder of 240.
Write down 4 as next digit of the result. 
Result so far: 43564.4
The remainder is 240 after subtracting 1140 from 1380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Step 10:
285 goes into 2400 8 times with a remainder of 120.
Write down 8 as next digit of the result. 
Result so far: 43564.48
If we subtract 2280 from 2400, we get 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Let's proceed to step 11:
The number 285 fits into 1200 4 times, leaving a remainder of 60.
Record the quotient 4 as the next digit in the result. 
Result so far: 43564.484
If we subtract 1140 from 1200, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 12:
285 can be fit into 600 2 times, resulting in a remainder of 30.
Record the quotient 2 as the next digit in the result. 
Result so far: 43564.4842
Deduct 570 from 600 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 13:
If we divide 300 by 285, we get 1 and a remainder of 15.
The number 1 becomes the next digit in our result. 
Result so far: 43564.48421
Subtracting 285 from 300 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 14:
285 can be fit into 150 0 times, resulting in a remainder of 150.
Put 0 as the next digit of the answer. 
Result so far: 43564.48421
The remainder is 150 after subtracting 0 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Let's proceed to step 15:
The number 285 fits into 1500 5 times, leaving a remainder of 75.
Put 5 as the next digit of the answer. 
Result so far: 43564.4842105
Subtracting 1425 from 1500 leaves us with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Let's proceed to step 16:
285 can be fit into 750 2 times, resulting in a remainder of 180.
Use 2 as the next digit of our solution. 
Result so far: 43564.48421052
If we take 570 away from 750, we end up with 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 43564.48421052 with a remainder of 1.8e-07.