We're dividing 645099 by 83 
The aim is to understand the frequency of 83 in 645099.

Moving on to step 1:
6 divided by 83 is 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Append the next digit (4) from the dividend to 6 and continue with: 64 / 83

Moving on to step 2:
64 divided by 83 is 0 with a remainder of 64.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 64 to get 64.
Append the next digit (5) from the dividend to 64 and continue with: 645 / 83

Let's proceed to step 3:
83 goes into 645 7 times with a remainder of 64.
Write down 7 as next digit of the result. 
Result so far: 7.0
If we subtract 581 from 645, we get 64.
Include the next digit (0) from the dividend after 64, then repeat: 640 / 83

Going ahead to step 4:
The number 83 fits into 640 7 times, leaving a remainder of 59.
Put 7 as the next digit of the answer. 
Result so far: 77.0
If we take 581 away from 640, we end up with 59.
Take the next digit (9) from the dividend and append it to 59, then repeat: 599 / 83

On to step 5:
83 goes into 599 7 times with a remainder of 18.
Write down 7 as next digit of the result. 
Result so far: 777.0
If we subtract 581 from 599, we get 18.
Bring next digit (9) of the dividend behind the 18 and repeat the process: 189 / 83

Let's proceed to step 6:
The number 83 fits into 189 2 times, leaving a remainder of 23.
Record the quotient 2 as the next digit in the result. 
Result so far: 7772.0
If we subtract 166 from 189, we get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

On to step 7:
230 divided by 83 is 2 with a remainder of 64.
Write down 2 as next digit of the result. 
Result so far: 7772.2
The remainder is 64 after subtracting 166 from 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Step 8:
83 can be fit into 640 7 times, resulting in a remainder of 59.
Put 7 as the next digit of the answer. 
Result so far: 7772.27
If we take 581 away from 640, we end up with 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

On to step 9:
If we divide 590 by 83, we get 7 and a remainder of 9.
Write down 7 as next digit of the result. 
Result so far: 7772.277
If we subtract 581 from 590, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

The final result is 7772.277 with a remainder of 0.0009.