81493661 ÷ 817 
The aim is to understand the frequency of 817 in 81493661.

Step 1:
817 goes into 8 0 times with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Fetch the next digit (1) from the dividend, attach it to 8 and continue: 81 / 817

Let's proceed to step 2:
When dividing 81 by 817, we get 0 with a remainder of 81.
Put 0 as the next digit of the answer. 
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 / 817

Let's proceed to step 3:
817 goes into 814 0 times with a remainder of 814.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 814 and we're left with 814.
Take the next digit (9) from the dividend and append it to 814, then repeat: 8149 / 817

On to step 4:
8149 divided by 817 is 9 with a remainder of 796.
Write down 9 as next digit of the result. 
Result so far: 9.0
Deduct 7353 from 8149 and we're left with 796.
Append the next digit (3) from the dividend to 796 and continue with: 7963 / 817

Let's proceed to step 5:
817 goes into 7963 9 times with a remainder of 610.
Record the quotient 9 as the next digit in the result. 
Result so far: 99.0
Subtract 7353 from 7963 to get 610.
Grab the next digit (6) from the dividend, add it to 610, then carry on: 6106 / 817

Going ahead to step 6:
The number 817 fits into 6106 7 times, leaving a remainder of 387.
The next digit of our result is 7. 
Result so far: 997.0
The remainder is 387 after subtracting 5719 from 6106.
Include the next digit (6) from the dividend after 387, then repeat: 3876 / 817

Going ahead to step 7:
817 goes into 3876 4 times with a remainder of 608.
Use 4 as the next digit of our solution. 
Result so far: 9974.0
If we take 3268 away from 3876, we end up with 608.
Include the next digit (1) from the dividend after 608, then repeat: 6081 / 817

On to step 8:
817 can be fit into 6081 7 times, resulting in a remainder of 362.
Put 7 as the next digit of the answer. 
Result so far: 99747.0
Deduct 5719 from 6081 and we're left with 362.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3620, and continue the process.

On to step 9:
817 can be fit into 3620 4 times, resulting in a remainder of 352.
The next digit of our result is 4. 
Result so far: 99747.4
Subtracting 3268 from 3620 leaves us with 352.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3520, and continue the process.

Step 10:
817 goes into 3520 4 times with a remainder of 252.
Write down 4 as next digit of the result. 
Result so far: 99747.44
If we subtract 3268 from 3520, we get 252.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2520, and continue the process.

In conclusion, the division gives 99747.44 with a balance of 0.252.