We divide 25573873 by 640
We want to divide 25573873 by 640.

Let's proceed to step 1:
The number 640 fits into 2 0 times, leaving a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Append the next digit (5) from the dividend to 2 and continue with: 25 / 640

Advancing to step 2:
640 goes into 25 0 times with a remainder of 25.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 25, we get 25.
Include the next digit (5) from the dividend after 25, then repeat: 255 / 640

Going ahead to step 3:
The number 640 fits into 255 0 times, leaving a remainder of 255.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 255 leaves us with 255.
Take the next digit (7) from the dividend and append it to 255, then repeat: 2557 / 640

Going ahead to step 4:
640 goes into 2557 3 times with a remainder of 637.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we take 1920 away from 2557, we end up with 637.
Fetch the next digit (3) from the dividend, attach it to 637 and continue: 6373 / 640

On to step 5:
640 goes into 6373 9 times with a remainder of 613.
Put 9 as the next digit of the answer. 
Result so far: 39.0
If we subtract 5760 from 6373, we get 613.
Grab the next digit (8) from the dividend, add it to 613, then carry on: 6138 / 640

Moving on to step 6:
If we divide 6138 by 640, we get 9 and a remainder of 378.
Use 9 as the next digit of our solution. 
Result so far: 399.0
If we take 5760 away from 6138, we end up with 378.
Append the next digit (7) from the dividend to 378 and continue with: 3787 / 640

Advancing to step 7:
640 can be fit into 3787 5 times, resulting in a remainder of 587.
Write down 5 as next digit of the result. 
Result so far: 3995.0
Subtract 3200 from 3787 to get 587.
Grab the next digit (3) from the dividend, add it to 587, then carry on: 5873 / 640

Step 8:
When dividing 5873 by 640, we get 9 with a remainder of 113.
Put 9 as the next digit of the answer. 
Result so far: 39959.0
Deduct 5760 from 5873 and we're left with 113.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1130, and continue the process.

On to step 9:
When dividing 1130 by 640, we get 1 with a remainder of 490.
Write down 1 as next digit of the result. 
Result so far: 39959.1
The remainder is 490 after subtracting 640 from 1130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4900, and continue the process.

Let's proceed to step 10:
If we divide 4900 by 640, we get 7 and a remainder of 420.
Use 7 as the next digit of our solution. 
Result so far: 39959.17
Deduct 4480 from 4900 and we're left with 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

Advancing to step 11:
The number 640 fits into 4200 6 times, leaving a remainder of 360.
The next digit of our result is 6. 
Result so far: 39959.176
Deduct 3840 from 4200 and we're left with 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

On to step 12:
640 can be fit into 3600 5 times, resulting in a remainder of 400.
Put 5 as the next digit of the answer. 
Result so far: 39959.1765
Subtracting 3200 from 3600 leaves us with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Going ahead to step 13:
If we divide 4000 by 640, we get 6 and a remainder of 160.
The next digit of our result is 6. 
Result so far: 39959.17656
Subtract 3840 from 4000 to get 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Step 14:
When dividing 1600 by 640, we get 2 with a remainder of 320.
The next digit of our result is 2. 
Result so far: 39959.176562
Subtract 1280 from 1600 to 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.

Step 15:
If we divide 3200 by 640, we get 5 and a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 39959.1765625
Subtract 3200 from 3200 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.

Going ahead to step 16:
0 divided by 640 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 39959.1765625
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 39959.1765625 with a remainder of 0.0.