81459310 ÷ 725 
The aim is to understand the frequency of 725 in 81459310.

Moving on to step 1:
When dividing 8 by 725, we get 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 725

Step 2:
The number 725 fits into 81 0 times, leaving a remainder of 81.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 81, we get 81.
Take the next digit (4) from the dividend and append it to 81, then repeat: 814 / 725

Moving on to step 3:
When dividing 814 by 725, we get 1 with a remainder of 89.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 725 from 814 and we're left with 89.
Grab the next digit (5) from the dividend, add it to 89, then carry on: 895 / 725

Going ahead to step 4:
The number 725 fits into 895 1 times, leaving a remainder of 170.
The number 1 becomes the next digit in our result. 
Result so far: 11.0
Subtract 725 from 895 to get 170.
Append the next digit (9) from the dividend to 170 and continue with: 1709 / 725

Advancing to step 5:
725 goes into 1709 2 times with a remainder of 259.
The next digit of our result is 2. 
Result so far: 112.0
Subtract 1450 from 1709 to get 259.
Fetch the next digit (3) from the dividend, attach it to 259 and continue: 2593 / 725

Advancing to step 6:
725 can be fit into 2593 3 times, resulting in a remainder of 418.
The next digit of our result is 3. 
Result so far: 1123.0
The remainder is 418 after subtracting 2175 from 2593.
Take the next digit (1) from the dividend and append it to 418, then repeat: 4181 / 725

Step 7:
725 goes into 4181 5 times with a remainder of 556.
Record the quotient 5 as the next digit in the result. 
Result so far: 11235.0
If we take 3625 away from 4181, we end up with 556.
Bring next digit (0) of the dividend behind the 556 and repeat the process: 5560 / 725

Step 8:
When dividing 5560 by 725, we get 7 with a remainder of 485.
The number 7 becomes the next digit in our result. 
Result so far: 112357.0
The remainder is 485 after subtracting 5075 from 5560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4850, and continue the process.

Let's proceed to step 9:
If we divide 4850 by 725, we get 6 and a remainder of 500.
Use 6 as the next digit of our solution. 
Result so far: 112357.6
If we take 4350 away from 4850, we end up with 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

Let's proceed to step 10:
If we divide 5000 by 725, we get 6 and a remainder of 650.
Write down 6 as next digit of the result. 
Result so far: 112357.66
Subtract 4350 from 5000 to get 650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6500, and continue the process.

The quotient of the division is 112357.66, and the remainder is 0.65.