We look at the division of 25935436 by 42 
We want to divide 25935436 by 42.

On to step 1:
When dividing 2 by 42, we get 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Take the next digit (5) from the dividend and append it to 2, then repeat: 25 / 42

Going ahead to step 2:
42 goes into 25 0 times with a remainder of 25.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 25 to get 25.
Append the next digit (9) from the dividend to 25 and continue with: 259 / 42

On to step 3:
When dividing 259 by 42, we get 6 with a remainder of 7.
Write down 6 as next digit of the result. 
Result so far: 6.0
If we subtract 252 from 259, we get 7.
Grab the next digit (3) from the dividend, add it to 7, then carry on: 73 / 42

Moving on to step 4:
If we divide 73 by 42, we get 1 and a remainder of 31.
The number 1 becomes the next digit in our result. 
Result so far: 61.0
The remainder is 31 after subtracting 42 from 73.
Bring next digit (5) of the dividend behind the 31 and repeat the process: 315 / 42

Step 5:
315 divided by 42 is 7 with a remainder of 21.
Write down 7 as next digit of the result. 
Result so far: 617.0
Deduct 294 from 315 and we're left with 21.
Include the next digit (4) from the dividend after 21, then repeat: 214 / 42

Step 6:
If we divide 214 by 42, we get 5 and a remainder of 4.
Record the quotient 5 as the next digit in the result. 
Result so far: 6175.0
Subtracting 210 from 214 leaves us with 4.
Bring next digit (3) of the dividend behind the 4 and repeat the process: 43 / 42

Going ahead to step 7:
42 goes into 43 1 times with a remainder of 1.
Use 1 as the next digit of our solution. 
Result so far: 61751.0
Subtracting 42 from 43 leaves us with 1.
Bring next digit (6) of the dividend behind the 1 and repeat the process: 16 / 42

Let's proceed to step 8:
When dividing 16 by 42, we get 0 with a remainder of 16.
The number 0 becomes the next digit in our result. 
Result so far: 617510.0
Subtract 0 from 16 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 9:
42 can be fit into 160 3 times, resulting in a remainder of 34.
Write down 3 as next digit of the result. 
Result so far: 617510.3
Subtracting 126 from 160 leaves us with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Going ahead to step 10:
340 divided by 42 is 8 with a remainder of 4.
The next digit of our result is 8. 
Result so far: 617510.38
The remainder is 4 after subtracting 336 from 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 11:
42 goes into 40 0 times with a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 617510.38
If we subtract 0 from 40, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 12:
42 goes into 400 9 times with a remainder of 22.
The next digit of our result is 9. 
Result so far: 617510.3809
Subtract 378 from 400 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Step 13:
When dividing 220 by 42, we get 5 with a remainder of 10.
Record the quotient 5 as the next digit in the result. 
Result so far: 617510.38095
The remainder is 10 after subtracting 210 from 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 14:
42 goes into 100 2 times with a remainder of 16.
The next digit of our result is 2. 
Result so far: 617510.380952
Deduct 84 from 100 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 15:
If we divide 160 by 42, we get 3 and a remainder of 34.
Record the quotient 3 as the next digit in the result. 
Result so far: 617510.3809523
Deduct 126 from 160 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Going ahead to step 16:
The number 42 fits into 340 8 times, leaving a remainder of 4.
The number 8 becomes the next digit in our result. 
Result so far: 617510.38095238
If we take 336 away from 340, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

In conclusion, the division gives 617510.38095238 with a balance of 4e-09.