We look at the division of 15725171 by 609 
We want to figure out the number of times 15725171 can be divided by 609.

Step 1:
609 can be fit into 1 0 times, resulting in a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Take the next digit (5) from the dividend and append it to 1, then repeat: 15 / 609

Step 2:
If we divide 15 by 609, we get 0 and a remainder of 15.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 15 and we're left with 15.
Append the next digit (7) from the dividend to 15 and continue with: 157 / 609

Let's proceed to step 3:
When dividing 157 by 609, we get 0 with a remainder of 157.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 157 after subtracting 0 from 157.
Fetch the next digit (2) from the dividend, attach it to 157 and continue: 1572 / 609

Going ahead to step 4:
If we divide 1572 by 609, we get 2 and a remainder of 354.
Use 2 as the next digit of our solution. 
Result so far: 2.0
The remainder is 354 after subtracting 1218 from 1572.
Include the next digit (5) from the dividend after 354, then repeat: 3545 / 609

Moving on to step 5:
609 goes into 3545 5 times with a remainder of 500.
Use 5 as the next digit of our solution. 
Result so far: 25.0
If we subtract 3045 from 3545, we get 500.
Fetch the next digit (1) from the dividend, attach it to 500 and continue: 5001 / 609

Step 6:
609 goes into 5001 8 times with a remainder of 129.
Use 8 as the next digit of our solution. 
Result so far: 258.0
Subtracting 4872 from 5001 leaves us with 129.
Include the next digit (7) from the dividend after 129, then repeat: 1297 / 609

Advancing to step 7:
609 goes into 1297 2 times with a remainder of 79.
Use 2 as the next digit of our solution. 
Result so far: 2582.0
If we subtract 1218 from 1297, we get 79.
Fetch the next digit (1) from the dividend, attach it to 79 and continue: 791 / 609

Advancing to step 8:
609 goes into 791 1 times with a remainder of 182.
Put 1 as the next digit of the answer. 
Result so far: 25821.0
If we subtract 609 from 791, we get 182.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1820, and continue the process.

Let's proceed to step 9:
609 can be fit into 1820 2 times, resulting in a remainder of 602.
The next digit of our result is 2. 
Result so far: 25821.2
The remainder is 602 after subtracting 1218 from 1820.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6020, and continue the process.

Step 10:
The number 609 fits into 6020 9 times, leaving a remainder of 539.
Use 9 as the next digit of our solution. 
Result so far: 25821.29
The remainder is 539 after subtracting 5481 from 6020.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5390, and continue the process.

On to step 11:
The number 609 fits into 5390 8 times, leaving a remainder of 518.
Put 8 as the next digit of the answer. 
Result so far: 25821.298
The remainder is 518 after subtracting 4872 from 5390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5180, and continue the process.

Going ahead to step 12:
5180 divided by 609 is 8 with a remainder of 308.
Put 8 as the next digit of the answer. 
Result so far: 25821.2988
The remainder is 308 after subtracting 4872 from 5180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3080, and continue the process.

Our division results in 25821.2988 with a remaining 0.00308.