81512 divided by 69 
The aim is to understand the frequency of 69 in 81512.

Step 1:
69 goes into 8 0 times with a remainder of 8.
Record the quotient 0 as the next digit in 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 / 69

Advancing to step 2:
81 divided by 69 is 1 with a remainder of 12.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 12 after subtracting 69 from 81.
Fetch the next digit (5) from the dividend, attach it to 12 and continue: 125 / 69

On to step 3:
125 divided by 69 is 1 with a remainder of 56.
Write down 1 as next digit of the result. 
Result so far: 11.0
Deduct 69 from 125 and we're left with 56.
Bring next digit (1) of the dividend behind the 56 and repeat the process: 561 / 69

On to step 4:
561 divided by 69 is 8 with a remainder of 9.
Use 8 as the next digit of our solution. 
Result so far: 118.0
The remainder is 9 after subtracting 552 from 561.
Include the next digit (2) from the dividend after 9, then repeat: 92 / 69

Let's proceed to step 5:
If we divide 92 by 69, we get 1 and a remainder of 23.
Write down 1 as next digit of the result. 
Result so far: 1181.0
Subtracting 69 from 92 leaves us with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

On to step 6:
69 goes into 230 3 times with a remainder of 23.
Use 3 as the next digit of our solution. 
Result so far: 1181.3
Subtract 207 from 230 to get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Moving on to step 7:
If we divide 230 by 69, we get 3 and a remainder of 23.
The number 3 becomes the next digit in our result. 
Result so far: 1181.33
If we subtract 207 from 230, we get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

The final result is 1181.33 with a remainder of 0.023.