25858497 ÷ 671 
Our goal is to divide 25858497 by 671.

Moving on to step 1:
The number 671 fits into 2 0 times, leaving a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Grab the next digit (5) from the dividend, add it to 2, then carry on: 25 / 671

Let's proceed to step 2:
When dividing 25 by 671, we get 0 with a remainder of 25.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 25 to get 25.
Bring next digit (8) of the dividend behind the 25 and repeat the process: 258 / 671

Advancing to step 3:
When dividing 258 by 671, we get 0 with a remainder of 258.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 258 leaves us with 258.
Take the next digit (5) from the dividend and append it to 258, then repeat: 2585 / 671

Let's proceed to step 4:
The number 671 fits into 2585 3 times, leaving a remainder of 572.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Subtracting 2013 from 2585 leaves us with 572.
Bring next digit (8) of the dividend behind the 572 and repeat the process: 5728 / 671

Advancing to step 5:
The number 671 fits into 5728 8 times, leaving a remainder of 360.
Use 8 as the next digit of our solution. 
Result so far: 38.0
Subtracting 5368 from 5728 leaves us with 360.
Bring next digit (4) of the dividend behind the 360 and repeat the process: 3604 / 671

On to step 6:
671 can be fit into 3604 5 times, resulting in a remainder of 249.
Record the quotient 5 as the next digit in the result. 
Result so far: 385.0
The remainder is 249 after subtracting 3355 from 3604.
Grab the next digit (9) from the dividend, add it to 249, then carry on: 2499 / 671

Step 7:
671 can be fit into 2499 3 times, resulting in a remainder of 486.
Record the quotient 3 as the next digit in the result. 
Result so far: 3853.0
Subtracting 2013 from 2499 leaves us with 486.
Append the next digit (7) from the dividend to 486 and continue with: 4867 / 671

Step 8:
If we divide 4867 by 671, we get 7 and a remainder of 170.
Use 7 as the next digit of our solution. 
Result so far: 38537.0
If we subtract 4697 from 4867, we get 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

On to step 9:
671 goes into 1700 2 times with a remainder of 358.
The number 2 becomes the next digit in our result. 
Result so far: 38537.2
Deduct 1342 from 1700 and we're left with 358.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3580, and continue the process.

Going ahead to step 10:
When dividing 3580 by 671, we get 5 with a remainder of 225.
The number 5 becomes the next digit in our result. 
Result so far: 38537.25
If we subtract 3355 from 3580, we get 225.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

Advancing to step 11:
The number 671 fits into 2250 3 times, leaving a remainder of 237.
The next digit of our result is 3. 
Result so far: 38537.253
Deduct 2013 from 2250 and we're left with 237.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2370, and continue the process.

Going ahead to step 12:
The number 671 fits into 2370 3 times, leaving a remainder of 357.
Record the quotient 3 as the next digit in the result. 
Result so far: 38537.2533
The remainder is 357 after subtracting 2013 from 2370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3570, and continue the process.

The final result is 38537.2533 with a remainder of 0.00357.