Let's divide 25309 by 39
We want to figure out the number of times 25309 can be divided by 39.

Going ahead to step 1:
39 goes into 2 0 times with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Take the next digit (5) from the dividend and append it to 2, then repeat: 25 / 39

Let's proceed to step 2:
39 can be fit into 25 0 times, resulting in a remainder of 25.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 25, we end up with 25.
Fetch the next digit (3) from the dividend, attach it to 25 and continue: 253 / 39

Going ahead to step 3:
When dividing 253 by 39, we get 6 with a remainder of 19.
Use 6 as the next digit of our solution. 
Result so far: 6.0
If we subtract 234 from 253, we get 19.
Grab the next digit (0) from the dividend, add it to 19, then carry on: 190 / 39

On to step 4:
190 divided by 39 is 4 with a remainder of 34.
Write down 4 as next digit of the result. 
Result so far: 64.0
The remainder is 34 after subtracting 156 from 190.
Grab the next digit (9) from the dividend, add it to 34, then carry on: 349 / 39

Moving on to step 5:
349 divided by 39 is 8 with a remainder of 37.
Use 8 as the next digit of our solution. 
Result so far: 648.0
Subtracting 312 from 349 leaves us with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Moving on to step 6:
370 divided by 39 is 9 with a remainder of 19.
Write down 9 as next digit of the result. 
Result so far: 648.9
If we take 351 away from 370, we end up with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Going ahead to step 7:
If we divide 190 by 39, we get 4 and a remainder of 34.
Put 4 as the next digit of the answer. 
Result so far: 648.94
If we take 156 away from 190, we end up 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.

On to step 8:
39 goes into 340 8 times with a remainder of 28.
Write down 8 as next digit of the result. 
Result so far: 648.948
If we subtract 312 from 340, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Moving on to step 9:
When dividing 280 by 39, we get 7 with a remainder of 7.
Write down 7 as next digit of the result. 
Result so far: 648.9487
If we subtract 273 from 280, we get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

On to step 10:
39 can be fit into 70 1 times, resulting in a remainder of 31.
Record the quotient 1 as the next digit in the result. 
Result so far: 648.94871
If we subtract 39 from 70, we get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Advancing to step 11:
The number 39 fits into 310 7 times, leaving a remainder of 37.
Write down 7 as next digit of the result. 
Result so far: 648.948717
Subtracting 273 from 310 leaves us with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Let's proceed to step 12:
If we divide 370 by 39, we get 9 and a remainder of 19.
Record the quotient 9 as the next digit in the result. 
Result so far: 648.9487179
Subtracting 351 from 370 leaves us with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Let's proceed to step 13:
If we divide 190 by 39, we get 4 and a remainder of 34.
Write down 4 as next digit of the result. 
Result so far: 648.94871794
Subtract 156 from 190 to get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

The final outcome is 648.94871794, with a leftover of 3.4e-08.