428939 divided by 25 
We want to figure out the number of times 428939 can be divided by 25.

Moving on to step 1:
The number 25 fits into 4 0 times, leaving a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Fetch the next digit (2) from the dividend, attach it to 4 and continue: 42 / 25

Going ahead to step 2:
When dividing 42 by 25, we get 1 with a remainder of 17.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 25 from 42 leaves us with 17.
Grab the next digit (8) from the dividend, add it to 17, then carry on: 178 / 25

On to step 3:
178 divided by 25 is 7 with a remainder of 3.
Record the quotient 7 as the next digit in the result. 
Result so far: 17.0
Deduct 175 from 178 and we're left with 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 25

Let's proceed to step 4:
25 goes into 39 1 times with a remainder of 14.
Record the quotient 1 as the next digit in the result. 
Result so far: 171.0
Subtract 25 from 39 to get 14.
Include the next digit (3) from the dividend after 14, then repeat: 143 / 25

On to step 5:
25 can be fit into 143 5 times, resulting in a remainder of 18.
Record the quotient 5 as the next digit in the result. 
Result so far: 1715.0
Subtract 125 from 143 to get 18.
Bring next digit (9) of the dividend behind the 18 and repeat the process: 189 / 25

Moving on to step 6:
When dividing 189 by 25, we get 7 with a remainder of 14.
Use 7 as the next digit of our solution. 
Result so far: 17157.0
If we subtract 175 from 189, we get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Advancing to step 7:
25 goes into 140 5 times with a remainder of 15.
The next digit of our result is 5. 
Result so far: 17157.5
Subtract 125 from 140 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 8:
The number 25 fits into 150 6 times, leaving a remainder of 0.
The number 6 becomes the next digit in our result. 
Result so far: 17157.56
Deduct 150 from 150 and we're left 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.

Let's proceed to step 9:
25 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 17157.56
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.

Advancing to step 10:
If we divide 0 by 25, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 17157.56
The remainder is 0 after subtracting 0 from 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 outcome is 17157.56, with a leftover of 0.0.