25664140 ÷ 415 
We want to figure out the number of times 25664140 can be divided by 415.

On to step 1:
The number 415 fits into 2 0 times, leaving a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Include the next digit (5) from the dividend after 2, then repeat: 25 / 415

Advancing to step 2:
25 divided by 415 is 0 with a remainder of 25.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 25, we end up with 25.
Bring next digit (6) of the dividend behind the 25 and repeat the process: 256 / 415

Let's proceed to step 3:
256 divided by 415 is 0 with a remainder of 256.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 256 to get 256.
Append the next digit (6) from the dividend to 256 and continue with: 2566 / 415

Step 4:
The number 415 fits into 2566 6 times, leaving a remainder of 76.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
The remainder is 76 after subtracting 2490 from 2566.
Include the next digit (4) from the dividend after 76, then repeat: 764 / 415

Going ahead to step 5:
The number 415 fits into 764 1 times, leaving a remainder of 349.
The next digit of our result is 1. 
Result so far: 61.0
Deduct 415 from 764 and we're left with 349.
Bring next digit (1) of the dividend behind the 349 and repeat the process: 3491 / 415

Step 6:
The number 415 fits into 3491 8 times, leaving a remainder of 171.
Write down 8 as next digit of the result. 
Result so far: 618.0
If we take 3320 away from 3491, we end up with 171.
Grab the next digit (4) from the dividend, add it to 171, then carry on: 1714 / 415

Going ahead to step 7:
415 goes into 1714 4 times with a remainder of 54.
The next digit of our result is 4. 
Result so far: 6184.0
Subtract 1660 from 1714 to get 54.
Include the next digit (0) from the dividend after 54, then repeat: 540 / 415

Step 8:
If we divide 540 by 415, we get 1 and a remainder of 125.
The number 1 becomes the next digit in our result. 
Result so far: 61841.0
Subtracting 415 from 540 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.

Step 9:
If we divide 1250 by 415, we get 3 and a remainder of 5.
The number 3 becomes the next digit in our result. 
Result so far: 61841.3
If we subtract 1245 from 1250, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 10:
When dividing 50 by 415, we get 0 with a remainder of 50.
Write down 0 as next digit of the result. 
Result so far: 61841.3
Subtract 0 from 50 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 11:
If we divide 500 by 415, we get 1 and a remainder of 85.
The number 1 becomes the next digit in our result. 
Result so far: 61841.301
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.

Going ahead to step 12:
850 divided by 415 is 2 with a remainder of 20.
Record the quotient 2 as the next digit in the result. 
Result so far: 61841.3012
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.

Going ahead to step 13:
If we divide 200 by 415, we get 0 and a remainder of 200.
The number 0 becomes the next digit in our result. 
Result so far: 61841.3012
The remainder is 200 after subtracting 0 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Step 14:
2000 divided by 415 is 4 with a remainder of 340.
The next digit of our result is 4. 
Result so far: 61841.301204
Subtract 1660 from 2000 to get 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

On to step 15:
When dividing 3400 by 415, we get 8 with a remainder of 80.
The number 8 becomes the next digit in our result. 
Result so far: 61841.3012048
If we take 3320 away from 3400, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 16:
415 goes into 800 1 times with a remainder of 385.
The number 1 becomes the next digit in our result. 
Result so far: 61841.30120481
If we subtract 415 from 800, we get 385.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3850, and continue the process.

The final result is 61841.30120481 with a remainder of 3.85e-07.