We're dividing 608378 by 86 
The aim is to understand the frequency of 86 in 608378.

Step 1:
86 goes into 6 0 times with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Take the next digit (0) from the dividend and append it to 6, then repeat: 60 / 86

Advancing to step 2:
60 divided by 86 is 0 with a remainder of 60.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 60 to get 60.
Grab the next digit (8) from the dividend, add it to 60, then carry on: 608 / 86

Going ahead to step 3:
86 goes into 608 7 times with a remainder of 6.
Put 7 as the next digit of the answer. 
Result so far: 7.0
Subtract 602 from 608 to get 6.
Take the next digit (3) from the dividend and append it to 6, then repeat: 63 / 86

On to step 4:
When dividing 63 by 86, we get 0 with a remainder of 63.
The next digit of our result is 0. 
Result so far: 70.0
If we subtract 0 from 63, we get 63.
Take the next digit (7) from the dividend and append it to 63, then repeat: 637 / 86

Advancing to step 5:
86 can be fit into 637 7 times, resulting in a remainder of 35.
The next digit of our result is 7. 
Result so far: 707.0
The remainder is 35 after subtracting 602 from 637.
Append the next digit (8) from the dividend to 35 and continue with: 358 / 86

On to step 6:
If we divide 358 by 86, we get 4 and a remainder of 14.
Use 4 as the next digit of our solution. 
Result so far: 7074.0
Subtract 344 from 358 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Going ahead to step 7:
86 goes into 140 1 times with a remainder of 54.
Put 1 as the next digit of the answer. 
Result so far: 7074.1
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.

Going ahead to step 8:
540 divided by 86 is 6 with a remainder of 24.
Put 6 as the next digit of the answer. 
Result so far: 7074.16
Subtract 516 from 540 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 9:
86 goes into 240 2 times with a remainder of 68.
The number 2 becomes the next digit in our result. 
Result so far: 7074.162
The remainder is 68 after subtracting 172 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Advancing to step 10:
When dividing 680 by 86, we get 7 with a remainder of 78.
Record the quotient 7 as the next digit in the result. 
Result so far: 7074.1627
If we take 602 away from 680, we end up with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Let's proceed to step 11:
The number 86 fits into 780 9 times, leaving a remainder of 6.
Put 9 as the next digit of the answer. 
Result so far: 7074.16279
The remainder is 6 after subtracting 774 from 780.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 12:
86 goes into 60 0 times with a remainder of 60.
Put 0 as the next digit of the answer. 
Result so far: 7074.16279
Subtract 0 from 60 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Advancing to step 13:
600 divided by 86 is 6 with a remainder of 84.
Write down 6 as next digit of the result. 
Result so far: 7074.1627906
The remainder is 84 after subtracting 516 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Advancing to step 14:
840 divided by 86 is 9 with a remainder of 66.
Put 9 as the next digit of the answer. 
Result so far: 7074.16279069
Subtracting 774 from 840 leaves us with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Our division results in 7074.16279069 with a remaining 6.6e-08.