We look at the division of 25639428 by 402 
We're looking to find how many times 402 goes into 25639428.

Moving on to step 1:
402 can be fit into 2 0 times, resulting in a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Include the next digit (5) from the dividend after 2, then repeat: 25 / 402

Going ahead to step 2:
When dividing 25 by 402, we get 0 with a remainder of 25.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 25, we end up with 25.
Grab the next digit (6) from the dividend, add it to 25, then carry on: 256 / 402

Advancing to step 3:
If we divide 256 by 402, we get 0 and a remainder of 256.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 256, we get 256.
Fetch the next digit (3) from the dividend, attach it to 256 and continue: 2563 / 402

On to step 4:
If we divide 2563 by 402, we get 6 and a remainder of 151.
The next digit of our result is 6. 
Result so far: 6.0
Subtracting 2412 from 2563 leaves us with 151.
Grab the next digit (9) from the dividend, add it to 151, then carry on: 1519 / 402

Moving on to step 5:
402 goes into 1519 3 times with a remainder of 313.
Put 3 as the next digit of the answer. 
Result so far: 63.0
If we subtract 1206 from 1519, we get 313.
Append the next digit (4) from the dividend to 313 and continue with: 3134 / 402

Moving on to step 6:
402 goes into 3134 7 times with a remainder of 320.
Use 7 as the next digit of our solution. 
Result so far: 637.0
The remainder is 320 after subtracting 2814 from 3134.
Bring next digit (2) of the dividend behind the 320 and repeat the process: 3202 / 402

Going ahead to step 7:
If we divide 3202 by 402, we get 7 and a remainder of 388.
Record the quotient 7 as the next digit in the result. 
Result so far: 6377.0
Subtracting 2814 from 3202 leaves us with 388.
Append the next digit (8) from the dividend to 388 and continue with: 3888 / 402

On to step 8:
402 goes into 3888 9 times with a remainder of 270.
Use 9 as the next digit of our solution. 
Result so far: 63779.0
Subtracting 3618 from 3888 leaves us with 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Let's proceed to step 9:
402 can be fit into 2700 6 times, resulting in a remainder of 288.
Write down 6 as next digit of the result. 
Result so far: 63779.6
Subtracting 2412 from 2700 leaves us with 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

Moving on to step 10:
402 can be fit into 2880 7 times, resulting in a remainder of 66.
The number 7 becomes the next digit in our result. 
Result so far: 63779.67
Deduct 2814 from 2880 and we're left with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Step 11:
402 can be fit into 660 1 times, resulting in a remainder of 258.
The next digit of our result is 1. 
Result so far: 63779.671
Deduct 402 from 660 and we're left with 258.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2580, and continue the process.

Let's proceed to step 12:
402 goes into 2580 6 times with a remainder of 168.
Use 6 as the next digit of our solution. 
Result so far: 63779.6716
Subtract 2412 from 2580 to get 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

Moving on to step 13:
1680 divided by 402 is 4 with a remainder of 72.
The number 4 becomes the next digit in our result. 
Result so far: 63779.67164
If we subtract 1608 from 1680, we get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Moving on to step 14:
402 goes into 720 1 times with a remainder of 318.
Write down 1 as next digit of the result. 
Result so far: 63779.671641
If we take 402 away from 720, we end up with 318.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3180, and continue the process.

Let's proceed to step 15:
402 goes into 3180 7 times with a remainder of 366.
Put 7 as the next digit of the answer. 
Result so far: 63779.6716417
Deduct 2814 from 3180 and we're left with 366.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3660, and continue the process.

Going ahead to step 16:
402 can be fit into 3660 9 times, resulting in a remainder of 42.
Use 9 as the next digit of our solution. 
Result so far: 63779.67164179
If we subtract 3618 from 3660, we get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

In conclusion, the division gives 63779.67164179 with a balance of 4.2e-08.