We look at the division of 25857938 by 993 
We want to divide 25857938 by 993.

Going ahead to step 1:
The number 993 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.
Take the next digit (5) from the dividend and append it to 2, then repeat: 25 / 993

On to step 2:
The number 993 fits into 25 0 times, leaving a remainder of 25.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 25, we end up with 25.
Bring next digit (8) of the dividend behind the 25 and repeat the process: 258 / 993

Step 3:
When dividing 258 by 993, we get 0 with a remainder of 258.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 258 after subtracting 0 from 258.
Fetch the next digit (5) from the dividend, attach it to 258 and continue: 2585 / 993

On to step 4:
When dividing 2585 by 993, we get 2 with a remainder of 599.
The next digit of our result is 2. 
Result so far: 2.0
Deduct 1986 from 2585 and we're left with 599.
Bring next digit (7) of the dividend behind the 599 and repeat the process: 5997 / 993

Step 5:
993 goes into 5997 6 times with a remainder of 39.
Put 6 as the next digit of the answer. 
Result so far: 26.0
Deduct 5958 from 5997 and we're left with 39.
Bring next digit (9) of the dividend behind the 39 and repeat the process: 399 / 993

Advancing to step 6:
If we divide 399 by 993, we get 0 and a remainder of 399.
Use 0 as the next digit of our solution. 
Result so far: 260.0
The remainder is 399 after subtracting 0 from 399.
Append the next digit (3) from the dividend to 399 and continue with: 3993 / 993

Step 7:
993 can be fit into 3993 4 times, resulting in a remainder of 21.
Record the quotient 4 as the next digit in the result. 
Result so far: 2604.0
The remainder is 21 after subtracting 3972 from 3993.
Include the next digit (8) from the dividend after 21, then repeat: 218 / 993

On to step 8:
993 goes into 218 0 times with a remainder of 218.
Write down 0 as next digit of the result. 
Result so far: 26040.0
If we take 0 away from 218, we end up with 218.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2180, and continue the process.

Advancing to step 9:
993 goes into 2180 2 times with a remainder of 194.
The number 2 becomes the next digit in our result. 
Result so far: 26040.2
Subtracting 1986 from 2180 leaves us with 194.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1940, and continue the process.

Going ahead to step 10:
1940 divided by 993 is 1 with a remainder of 947.
The next digit of our result is 1. 
Result so far: 26040.21
Subtracting 993 from 1940 leaves us with 947.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9470, and continue the process.

Let's proceed to step 11:
993 can be fit into 9470 9 times, resulting in a remainder of 533.
Record the quotient 9 as the next digit in the result. 
Result so far: 26040.219
If we subtract 8937 from 9470, we get 533.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5330, and continue the process.

Advancing to step 12:
If we divide 5330 by 993, we get 5 and a remainder of 365.
Put 5 as the next digit of the answer. 
Result so far: 26040.2195
If we subtract 4965 from 5330, we get 365.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3650, and continue the process.

Let's proceed to step 13:
993 goes into 3650 3 times with a remainder of 671.
Write down 3 as next digit of the result. 
Result so far: 26040.21953
The remainder is 671 after subtracting 2979 from 3650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6710, and continue the process.

Moving on to step 14:
993 can be fit into 6710 6 times, resulting in a remainder of 752.
Use 6 as the next digit of our solution. 
Result so far: 26040.219536
If we subtract 5958 from 6710, we get 752.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7520, and continue the process.

Step 15:
7520 divided by 993 is 7 with a remainder of 569.
The next digit of our result is 7. 
Result so far: 26040.2195367
Deduct 6951 from 7520 and we're left with 569.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5690, and continue the process.

Moving on to step 16:
If we divide 5690 by 993, we get 5 and a remainder of 725.
The number 5 becomes the next digit in our result. 
Result so far: 26040.21953675
If we subtract 4965 from 5690, we get 725.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7250, and continue the process.

The final outcome is 26040.21953675, with a leftover of 7.25e-07.