Let's divide 12408688 by 415
Our goal is to divide 12408688 by 415.

Let's proceed to step 1:
When dividing 1 by 415, we get 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 415

Moving on to step 2:
415 can be fit into 12 0 times, resulting in a remainder of 12.
Write down 0 as next digit of 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 / 415

Advancing to step 3:
When dividing 124 by 415, we get 0 with a remainder of 124.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 124, we get 124.
Include the next digit (0) from the dividend after 124, then repeat: 1240 / 415

Moving on to step 4:
If we divide 1240 by 415, we get 2 and a remainder of 410.
Write down 2 as next digit of the result. 
Result so far: 2.0
Subtracting 830 from 1240 leaves us with 410.
Append the next digit (8) from the dividend to 410 and continue with: 4108 / 415

On to step 5:
The number 415 fits into 4108 9 times, leaving a remainder of 373.
Put 9 as the next digit of the answer. 
Result so far: 29.0
The remainder is 373 after subtracting 3735 from 4108.
Append the next digit (6) from the dividend to 373 and continue with: 3736 / 415

Moving on to step 6:
3736 divided by 415 is 9 with a remainder of 1.
Record the quotient 9 as the next digit in the result. 
Result so far: 299.0
The remainder is 1 after subtracting 3735 from 3736.
Include the next digit (8) from the dividend after 1, then repeat: 18 / 415

Moving on to step 7:
18 divided by 415 is 0 with a remainder of 18.
Put 0 as the next digit of the answer. 
Result so far: 2990.0
Subtract 0 from 18 to get 18.
Append the next digit (8) from the dividend to 18 and continue with: 188 / 415

Step 8:
415 can be fit into 188 0 times, resulting in a remainder of 188.
The next digit of our result is 0. 
Result so far: 29900.0
The remainder is 188 after subtracting 0 from 188.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1880, and continue the process.

Step 9:
When dividing 1880 by 415, we get 4 with a remainder of 220.
The next digit of our result is 4. 
Result so far: 29900.4
The remainder is 220 after subtracting 1660 from 1880.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Let's proceed to step 10:
If we divide 2200 by 415, we get 5 and a remainder of 125.
The next digit of our result is 5. 
Result so far: 29900.45
Subtracting 2075 from 2200 leaves us with 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

On to step 11:
1250 divided by 415 is 3 with a remainder of 5.
Write down 3 as next digit of the result. 
Result so far: 29900.453
Deduct 1245 from 1250 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 12:
When dividing 50 by 415, we get 0 with a remainder of 50.
The next digit of our result is 0. 
Result so far: 29900.453
The remainder is 50 after subtracting 0 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 13:
The number 415 fits into 500 1 times, leaving a remainder of 85.
Put 1 as the next digit of the answer. 
Result so far: 29900.45301
Deduct 415 from 500 and we're left with 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Advancing to step 14:
If we divide 850 by 415, we get 2 and a remainder of 20.
The number 2 becomes the next digit in our result. 
Result so far: 29900.453012
Deduct 830 from 850 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 15:
The number 415 fits into 200 0 times, leaving a remainder of 200.
Put 0 as the next digit of the answer. 
Result so far: 29900.453012
Subtract 0 from 200 to get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Moving on to step 16:
415 can be fit into 2000 4 times, resulting in a remainder of 340.
Write down 4 as next digit of the result. 
Result so far: 29900.45301204
If we take 1660 away from 2000, we end up with 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

The quotient of the division is 29900.45301204, and the remainder is 3.4e-07.