85510835 ÷ 12 
The aim is to understand the frequency of 12 in 85510835.

On to step 1:
When dividing 8 by 12, we get 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Take the next digit (5) from the dividend and append it to 8, then repeat: 85 / 12

Going ahead to step 2:
The number 12 fits into 85 7 times, leaving a remainder of 1.
Write down 7 as next digit of the result. 
Result so far: 7.0
Subtract 84 from 85 to get 1.
Take the next digit (5) from the dividend and append it to 1, then repeat: 15 / 12

Advancing to step 3:
12 goes into 15 1 times with a remainder of 3.
Write down 1 as next digit of the result. 
Result so far: 71.0
If we take 12 away from 15, we end up with 3.
Bring next digit (1) of the dividend behind the 3 and repeat the process: 31 / 12

Moving on to step 4:
12 goes into 31 2 times with a remainder of 7.
Record the quotient 2 as the next digit in the result. 
Result so far: 712.0
Deduct 24 from 31 and we're left with 7.
Take the next digit (0) from the dividend and append it to 7, then repeat: 70 / 12

Moving on to step 5:
When dividing 70 by 12, we get 5 with a remainder of 10.
Record the quotient 5 as the next digit in the result. 
Result so far: 7125.0
If we take 60 away from 70, we end up with 10.
Take the next digit (8) from the dividend and append it to 10, then repeat: 108 / 12

Moving on to step 6:
12 can be fit into 108 9 times, resulting in a remainder of 0.
Write down 9 as next digit of the result. 
Result so far: 71259.0
If we subtract 108 from 108, we get 0.
Append the next digit (3) from the dividend to 0 and continue with: 3 / 12

Going ahead to step 7:
When dividing 3 by 12, we get 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 712590.0
If we subtract 0 from 3, we get 3.
Fetch the next digit (5) from the dividend, attach it to 3 and continue: 35 / 12

Going ahead to step 8:
35 divided by 12 is 2 with a remainder of 11.
The next digit of our result is 2. 
Result so far: 7125902.0
The remainder is 11 after subtracting 24 from 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 9:
12 can be fit into 110 9 times, resulting in a remainder of 2.
Put 9 as the next digit of the answer. 
Result so far: 7125902.9
If we subtract 108 from 110, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 10:
When dividing 20 by 12, we get 1 with a remainder of 8.
Put 1 as the next digit of the answer. 
Result so far: 7125902.91
The remainder is 8 after subtracting 12 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 11:
When dividing 80 by 12, we get 6 with a remainder of 8.
Put 6 as the next digit of the answer. 
Result so far: 7125902.916
Subtracting 72 from 80 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 12:
12 goes into 80 6 times with a remainder of 8.
Record the quotient 6 as the next digit in the result. 
Result so far: 7125902.9166
The remainder is 8 after subtracting 72 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The final outcome is 7125902.9166, with a leftover of 8e-05.