We're dividing 72589442 by 725 
The aim is to understand the frequency of 725 in 72589442.

On to step 1:
The number 725 fits into 7 0 times, leaving a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Include the next digit (2) from the dividend after 7, then repeat: 72 / 725

Going ahead to step 2:
72 divided by 725 is 0 with a remainder of 72.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 72, we get 72.
Bring next digit (5) of the dividend behind the 72 and repeat the process: 725 / 725

On to step 3:
725 can be fit into 725 1 times, resulting in a remainder of 0.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 725 from 725 and we're left with 0.
Include the next digit (8) from the dividend after 0, then repeat: 8 / 725

On to step 4:
8 divided by 725 is 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
The remainder is 8 after subtracting 0 from 8.
Grab the next digit (9) from the dividend, add it to 8, then carry on: 89 / 725

On to step 5:
725 can be fit into 89 0 times, resulting in a remainder of 89.
The next digit of our result is 0. 
Result so far: 100.0
If we take 0 away from 89, we end up with 89.
Grab the next digit (4) from the dividend, add it to 89, then carry on: 894 / 725

Step 6:
If we divide 894 by 725, we get 1 and a remainder of 169.
Put 1 as the next digit of the answer. 
Result so far: 1001.0
Deduct 725 from 894 and we're left with 169.
Append the next digit (4) from the dividend to 169 and continue with: 1694 / 725

Advancing to step 7:
725 goes into 1694 2 times with a remainder of 244.
The next digit of our result is 2. 
Result so far: 10012.0
Deduct 1450 from 1694 and we're left with 244.
Append the next digit (2) from the dividend to 244 and continue with: 2442 / 725

Going ahead to step 8:
If we divide 2442 by 725, we get 3 and a remainder of 267.
Use 3 as the next digit of our solution. 
Result so far: 100123.0
If we subtract 2175 from 2442, we get 267.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2670, and continue the process.

Step 9:
If we divide 2670 by 725, we get 3 and a remainder of 495.
The next digit of our result is 3. 
Result so far: 100123.3
Subtract 2175 from 2670 to get 495.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4950, and continue the process.

Step 10:
The number 725 fits into 4950 6 times, leaving a remainder of 600.
The next digit of our result is 6. 
Result so far: 100123.36
Subtract 4350 from 4950 to get 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

Step 11:
The number 725 fits into 6000 8 times, leaving a remainder of 200.
Use 8 as the next digit of our solution. 
Result so far: 100123.368
If we subtract 5800 from 6000, we get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

On to step 12:
725 goes into 2000 2 times with a remainder of 550.
Write down 2 as next digit of the result. 
Result so far: 100123.3682
Deduct 1450 from 2000 and we're left with 550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5500, and continue the process.

Advancing to step 13:
The number 725 fits into 5500 7 times, leaving a remainder of 425.
Record the quotient 7 as the next digit in the result. 
Result so far: 100123.36827
If we take 5075 away from 5500, we end up with 425.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4250, and continue the process.

On to step 14:
If we divide 4250 by 725, we get 5 and a remainder of 625.
Put 5 as the next digit of the answer. 
Result so far: 100123.368275
Deduct 3625 from 4250 and we're left 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.

Moving on to step 15:
If we divide 6250 by 725, we get 8 and a remainder of 450.
Use 8 as the next digit of our solution. 
Result so far: 100123.3682758
If we take 5800 away from 6250, we end up with 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4500, and continue the process.

Let's proceed to step 16:
725 can be fit into 4500 6 times, resulting in a remainder of 150.
The next digit of our result is 6. 
Result so far: 100123.36827586
Deduct 4350 from 4500 and we're left 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.

The final result is 100123.36827586 with a remainder of 1.5e-07.