We look at the division of 784700 by 86 
The aim is to understand the frequency of 86 in 784700.

On to step 1:
86 goes into 7 0 times 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

Advancing to step 2:
86 can be fit into 78 0 times, resulting in a remainder of 78.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 78 leaves us with 78.
Bring next digit (4) of the dividend behind the 78 and repeat the process: 784 / 86

Going ahead to step 3:
The number 86 fits into 784 9 times, leaving a remainder of 10.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
Subtracting 774 from 784 leaves us with 10.
Append the next digit (7) from the dividend to 10 and continue with: 107 / 86

On to step 4:
107 divided by 86 is 1 with a remainder of 21.
Use 1 as the next digit of our solution. 
Result so far: 91.0
Subtract 86 from 107 to get 21.
Fetch the next digit (0) from the dividend, attach it to 21 and continue: 210 / 86

Moving on to step 5:
The number 86 fits into 210 2 times, leaving a remainder of 38.
Put 2 as the next digit of the answer. 
Result so far: 912.0
If we take 172 away from 210, we end up with 38.
Take the next digit (0) from the dividend and append it to 38, then repeat: 380 / 86

Advancing to step 6:
86 goes into 380 4 times with a remainder of 36.
Write down 4 as next digit of the result. 
Result so far: 9124.0
Subtracting 344 from 380 leaves us with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Going ahead to step 7:
When dividing 360 by 86, we get 4 with a remainder of 16.
Write down 4 as next digit of the result. 
Result so far: 9124.4
If we subtract 344 from 360, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 8:
The number 86 fits into 160 1 times, leaving a remainder of 74.
Write down 1 as next digit of the result. 
Result so far: 9124.41
If we take 86 away from 160, we end up with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Advancing to step 9:
If we divide 740 by 86, we get 8 and a remainder of 52.
Put 8 as the next digit of the answer. 
Result so far: 9124.418
The remainder is 52 after subtracting 688 from 740.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Advancing to step 10:
The number 86 fits into 520 6 times, leaving a remainder of 4.
Write down 6 as next digit of the result. 
Result so far: 9124.4186
If we subtract 516 from 520, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 11:
40 divided by 86 is 0 with a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 9124.4186
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 12:
86 goes into 400 4 times with a remainder of 56.
The next digit of our result is 4. 
Result so far: 9124.418604
Subtracting 344 from 400 leaves us 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.

Going ahead to step 13:
When dividing 560 by 86, we get 6 with a remainder of 44.
The next digit of our result is 6. 
Result so far: 9124.4186046
Subtracting 516 from 560 leaves us 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.

On to step 14:
440 divided by 86 is 5 with a remainder of 10.
The number 5 becomes the next digit in our result. 
Result so far: 9124.41860465
Subtract 430 from 440 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

After the division, we end up with 9124.41860465 and a remainder of 1e-08.