789742 divided by 86 
The aim is to understand the frequency of 86 in 789742.

Step 1:
When dividing 7 by 86, we get 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Fetch the next digit (8) from the dividend, attach it to 7 and continue: 78 / 86

Let's proceed to step 2:
When dividing 78 by 86, we get 0 with a remainder of 78.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 78 and we're left with 78.
Bring next digit (9) of the dividend behind the 78 and repeat the process: 789 / 86

Let's proceed to step 3:
The number 86 fits into 789 9 times, leaving a remainder of 15.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
Subtracting 774 from 789 leaves us with 15.
Fetch the next digit (7) from the dividend, attach it to 15 and continue: 157 / 86

Advancing to step 4:
When dividing 157 by 86, we get 1 with a remainder of 71.
The number 1 becomes the next digit in our result. 
Result so far: 91.0
If we take 86 away from 157, we end up with 71.
Take the next digit (4) from the dividend and append it to 71, then repeat: 714 / 86

On to step 5:
714 divided by 86 is 8 with a remainder of 26.
The next digit of our result is 8. 
Result so far: 918.0
If we take 688 away from 714, we end up with 26.
Bring next digit (2) of the dividend behind the 26 and repeat the process: 262 / 86

Let's proceed to step 6:
262 divided by 86 is 3 with a remainder of 4.
Write down 3 as next digit of the result. 
Result so far: 9183.0
Deduct 258 from 262 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 7:
When dividing 40 by 86, we get 0 with a remainder of 40.
The next digit of our result is 0. 
Result so far: 9183.0
If we subtract 0 from 40, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 8:
When dividing 400 by 86, we get 4 with a remainder of 56.
Write down 4 as next digit of the result. 
Result so far: 9183.04
If we take 344 away from 400, we end up with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

On to step 9:
When dividing 560 by 86, we get 6 with a remainder of 44.
The next digit of our result is 6. 
Result so far: 9183.046
Deduct 516 from 560 and we're left with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Moving on to step 10:
If we divide 440 by 86, we get 5 and a remainder of 10.
The next digit of our result is 5. 
Result so far: 9183.0465
The remainder is 10 after subtracting 430 from 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 11:
When dividing 100 by 86, we get 1 with a remainder of 14.
Write down 1 as next digit of the result. 
Result so far: 9183.04651
Deduct 86 from 100 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Advancing to step 12:
86 can be fit into 140 1 times, resulting in a remainder of 54.
Record the quotient 1 as the next digit in the result. 
Result so far: 9183.046511
Subtracting 86 from 140 leaves us with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

The final outcome is 9183.046511, with a leftover of 5.4e-06.