We're dividing 650603 by 86 
The aim is to understand the frequency of 86 in 650603.

On to step 1:
If we divide 6 by 86, we get 0 and a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Take the next digit (5) from the dividend and append it to 6, then repeat: 65 / 86

Step 2:
The number 86 fits into 65 0 times, leaving a remainder of 65.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 65 after subtracting 0 from 65.
Take the next digit (0) from the dividend and append it to 65, then repeat: 650 / 86

Step 3:
650 divided by 86 is 7 with a remainder of 48.
Use 7 as the next digit of our solution. 
Result so far: 7.0
If we subtract 602 from 650, we get 48.
Bring next digit (6) of the dividend behind the 48 and repeat the process: 486 / 86

Step 4:
When dividing 486 by 86, we get 5 with a remainder of 56.
Write down 5 as next digit of the result. 
Result so far: 75.0
Deduct 430 from 486 and we're left with 56.
Take the next digit (0) from the dividend and append it to 56, then repeat: 560 / 86

Step 5:
86 can be fit into 560 6 times, resulting in a remainder of 44.
Put 6 as the next digit of the answer. 
Result so far: 756.0
The remainder is 44 after subtracting 516 from 560.
Grab the next digit (3) from the dividend, add it to 44, then carry on: 443 / 86

Going ahead to step 6:
443 divided by 86 is 5 with a remainder of 13.
The number 5 becomes the next digit in our result. 
Result so far: 7565.0
Subtracting 430 from 443 leaves us with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Moving on to step 7:
The number 86 fits into 130 1 times, leaving a remainder of 44.
Write down 1 as next digit of the result. 
Result so far: 7565.1
Deduct 86 from 130 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.

Step 8:
86 goes into 440 5 times with a remainder of 10.
The next digit of our result is 5. 
Result so far: 7565.15
Subtracting 430 from 440 leaves us with 10.
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 9:
86 can be fit into 100 1 times, resulting in a remainder of 14.
Write down 1 as next digit of the result. 
Result so far: 7565.151
If we subtract 86 from 100, we 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 10:
The number 86 fits into 140 1 times, leaving a remainder of 54.
The number 1 becomes the next digit in our result. 
Result so far: 7565.1511
If we take 86 away from 140, we end up 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 quotient of the division is 7565.1511, and the remainder is 0.00054.