15646427 divided by 725 
The aim is to understand the frequency of 725 in 15646427.

Going ahead to step 1:
725 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
The remainder is 1 after subtracting 0 from 1.
Take the next digit (5) from the dividend and append it to 1, then repeat: 15 / 725

Going ahead to step 2:
When dividing 15 by 725, we get 0 with a remainder of 15.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 15, we get 15.
Grab the next digit (6) from the dividend, add it to 15, then carry on: 156 / 725

Let's proceed to step 3:
725 can be fit into 156 0 times, resulting in a remainder of 156.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 156 and we're left with 156.
Fetch the next digit (4) from the dividend, attach it to 156 and continue: 1564 / 725

Advancing to step 4:
The number 725 fits into 1564 2 times, leaving a remainder of 114.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Deduct 1450 from 1564 and we're left with 114.
Take the next digit (6) from the dividend and append it to 114, then repeat: 1146 / 725

Going ahead to step 5:
The number 725 fits into 1146 1 times, leaving a remainder of 421.
The number 1 becomes the next digit in our result. 
Result so far: 21.0
Deduct 725 from 1146 and we're left with 421.
Grab the next digit (4) from the dividend, add it to 421, then carry on: 4214 / 725

On to step 6:
725 goes into 4214 5 times with a remainder of 589.
Use 5 as the next digit of our solution. 
Result so far: 215.0
Subtracting 3625 from 4214 leaves us with 589.
Include the next digit (2) from the dividend after 589, then repeat: 5892 / 725

Step 7:
725 can be fit into 5892 8 times, resulting in a remainder of 92.
Put 8 as the next digit of the answer. 
Result so far: 2158.0
Subtracting 5800 from 5892 leaves us with 92.
Grab the next digit (7) from the dividend, add it to 92, then carry on: 927 / 725

Advancing to step 8:
725 goes into 927 1 times with a remainder of 202.
The number 1 becomes the next digit in our result. 
Result so far: 21581.0
Subtract 725 from 927 to get 202.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2020, and continue the process.

On to step 9:
2020 divided by 725 is 2 with a remainder of 570.
Put 2 as the next digit of the answer. 
Result so far: 21581.2
Subtract 1450 from 2020 to get 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5700, and continue the process.

Moving on to step 10:
The number 725 fits into 5700 7 times, leaving a remainder of 625.
Write down 7 as next digit of the result. 
Result so far: 21581.27
If we take 5075 away from 5700, we end up with 625.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6250, and continue the process.

Step 11:
The number 725 fits into 6250 8 times, leaving a remainder of 450.
Put 8 as the next digit of the answer. 
Result so far: 21581.278
If we subtract 5800 from 6250, we get 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4500, and continue the process.

On to step 12:
725 goes into 4500 6 times with a remainder of 150.
The next digit of our result is 6. 
Result so far: 21581.2786
Subtracting 4350 from 4500 leaves us with 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

On to step 13:
725 goes into 1500 2 times with a remainder of 50.
Put 2 as the next digit of the answer. 
Result so far: 21581.27862
Subtracting 1450 from 1500 leaves us with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 14:
725 goes into 500 0 times with a remainder of 500.
Write down 0 as next digit of the result. 
Result so far: 21581.27862
If we subtract 0 from 500, we get 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

On to step 15:
If we divide 5000 by 725, we get 6 and a remainder of 650.
The next digit of our result is 6. 
Result so far: 21581.2786206
Deduct 4350 from 5000 and we're left with 650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6500, and continue the process.

Advancing to step 16:
6500 divided by 725 is 8 with a remainder of 700.
Put 8 as the next digit of the answer. 
Result so far: 21581.27862068
If we take 5800 away from 6500, we end up with 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7000, and continue the process.

The final outcome is 21581.27862068, with a leftover of 7e-07.