81689493 ÷ 797 
The aim is to understand the frequency of 797 in 81689493.

Step 1:
797 can be fit into 8 0 times, resulting in 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.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 797

Moving on to step 2:
When dividing 81 by 797, we get 0 with a remainder of 81.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 81 and we're left with 81.
Fetch the next digit (6) from the dividend, attach it to 81 and continue: 816 / 797

Let's proceed to step 3:
If we divide 816 by 797, we get 1 and a remainder of 19.
The next digit of our result is 1. 
Result so far: 1.0
If we take 797 away from 816, we end up with 19.
Bring next digit (8) of the dividend behind the 19 and repeat the process: 198 / 797

Let's proceed to step 4:
797 goes into 198 0 times with a remainder of 198.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
Subtracting 0 from 198 leaves us with 198.
Take the next digit (9) from the dividend and append it to 198, then repeat: 1989 / 797

Moving on to step 5:
When dividing 1989 by 797, we get 2 with a remainder of 395.
Record the quotient 2 as the next digit in the result. 
Result so far: 102.0
The remainder is 395 after subtracting 1594 from 1989.
Take the next digit (4) from the dividend and append it to 395, then repeat: 3954 / 797

Let's proceed to step 6:
If we divide 3954 by 797, we get 4 and a remainder of 766.
The number 4 becomes the next digit in our result. 
Result so far: 1024.0
Deduct 3188 from 3954 and we're left with 766.
Bring next digit (9) of the dividend behind the 766 and repeat the process: 7669 / 797

Let's proceed to step 7:
797 can be fit into 7669 9 times, resulting in a remainder of 496.
Write down 9 as next digit of the result. 
Result so far: 10249.0
Deduct 7173 from 7669 and we're left with 496.
Grab the next digit (3) from the dividend, add it to 496, then carry on: 4963 / 797

Going ahead to step 8:
The number 797 fits into 4963 6 times, leaving a remainder of 181.
Use 6 as the next digit of our solution. 
Result so far: 102496.0
Subtracting 4782 from 4963 leaves us with 181.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1810, and continue the process.

On to step 9:
The number 797 fits into 1810 2 times, leaving a remainder of 216.
The next digit of our result is 2. 
Result so far: 102496.2
The remainder is 216 after subtracting 1594 from 1810.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2160, and continue the process.

Advancing to step 10:
If we divide 2160 by 797, we get 2 and a remainder of 566.
Put 2 as the next digit of the answer. 
Result so far: 102496.22
Deduct 1594 from 2160 and we're left with 566.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5660, and continue the process.

The final outcome is 102496.22, with a leftover of 0.566.