We're dividing 25448735 by 640 
We want to figure out the number of times 25448735 can be divided by 640.

Going ahead to step 1:
The number 640 fits into 2 0 times, leaving a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Include the next digit (5) from the dividend after 2, then repeat: 25 / 640

Moving on to step 2:
The number 640 fits into 25 0 times, leaving a remainder of 25.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 25 and we're left with 25.
Fetch the next digit (4) from the dividend, attach it to 25 and continue: 254 / 640

Going ahead to step 3:
If we divide 254 by 640, we get 0 and a remainder of 254.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 254 leaves us with 254.
Grab the next digit (4) from the dividend, add it to 254, then carry on: 2544 / 640

Advancing to step 4:
640 can be fit into 2544 3 times, resulting in a remainder of 624.
Put 3 as the next digit of the answer. 
Result so far: 3.0
The remainder is 624 after subtracting 1920 from 2544.
Bring next digit (8) of the dividend behind the 624 and repeat the process: 6248 / 640

Going ahead to step 5:
If we divide 6248 by 640, we get 9 and a remainder of 488.
Record the quotient 9 as the next digit in the result. 
Result so far: 39.0
If we take 5760 away from 6248, we end up with 488.
Take the next digit (7) from the dividend and append it to 488, then repeat: 4887 / 640

Going ahead to step 6:
640 goes into 4887 7 times with a remainder of 407.
Write down 7 as next digit of the result. 
Result so far: 397.0
Subtract 4480 from 4887 to get 407.
Grab the next digit (3) from the dividend, add it to 407, then carry on: 4073 / 640

Advancing to step 7:
640 goes into 4073 6 times with a remainder of 233.
The next digit of our result is 6. 
Result so far: 3976.0
Deduct 3840 from 4073 and we're left with 233.
Fetch the next digit (5) from the dividend, attach it to 233 and continue: 2335 / 640

Advancing to step 8:
The number 640 fits into 2335 3 times, leaving a remainder of 415.
Write down 3 as next digit of the result. 
Result so far: 39763.0
If we subtract 1920 from 2335, we get 415.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4150, and continue the process.

Let's proceed to step 9:
640 goes into 4150 6 times with a remainder of 310.
The next digit of our result is 6. 
Result so far: 39763.6
If we take 3840 away from 4150, we end up with 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

Advancing to step 10:
3100 divided by 640 is 4 with a remainder of 540.
Record the quotient 4 as the next digit in the result. 
Result so far: 39763.64
Subtracting 2560 from 3100 leaves us with 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5400, and continue the process.

Advancing to step 11:
5400 divided by 640 is 8 with a remainder of 280.
Record the quotient 8 as the next digit in the result. 
Result so far: 39763.648
Deduct 5120 from 5400 and we're left with 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Step 12:
When dividing 2800 by 640, we get 4 with a remainder of 240.
The next digit of our result is 4. 
Result so far: 39763.6484
The remainder is 240 after subtracting 2560 from 2800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Step 13:
If we divide 2400 by 640, we get 3 and a remainder of 480.
Put 3 as the next digit of the answer. 
Result so far: 39763.64843
If we subtract 1920 from 2400, we get 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Advancing to step 14:
640 goes into 4800 7 times with a remainder of 320.
Write down 7 as next digit of the result. 
Result so far: 39763.648437
If we subtract 4480 from 4800, we get 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

On to step 15:
3200 divided by 640 is 5 with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 39763.6484375
The remainder is 0 after subtracting 3200 from 3200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 16:
If we divide 0 by 640, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 39763.6484375
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 39763.6484375 and a remainder of 0.0.