688140 divided by 83 
The aim is to understand the frequency of 83 in 688140.

On to step 1:
83 goes into 6 0 times with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Fetch the next digit (8) from the dividend, attach it to 6 and continue: 68 / 83

Let's proceed to step 2:
The number 83 fits into 68 0 times, leaving a remainder of 68.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 68, we end up with 68.
Include the next digit (8) from the dividend after 68, then repeat: 688 / 83

On to step 3:
The number 83 fits into 688 8 times, leaving a remainder of 24.
The next digit of our result is 8. 
Result so far: 8.0
Subtract 664 from 688 to get 24.
Grab the next digit (1) from the dividend, add it to 24, then carry on: 241 / 83

On to step 4:
If we divide 241 by 83, we get 2 and a remainder of 75.
The number 2 becomes the next digit in our result. 
Result so far: 82.0
Subtracting 166 from 241 leaves us with 75.
Append the next digit (4) from the dividend to 75 and continue with: 754 / 83

On to step 5:
83 goes into 754 9 times with a remainder of 7.
The number 9 becomes the next digit in our result. 
Result so far: 829.0
The remainder is 7 after subtracting 747 from 754.
Fetch the next digit (0) from the dividend, attach it to 7 and continue: 70 / 83

Let's proceed to step 6:
If we divide 70 by 83, we get 0 and a remainder of 70.
The number 0 becomes the next digit in our result. 
Result so far: 8290.0
Subtract 0 from 70 to get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

On to step 7:
700 divided by 83 is 8 with a remainder of 36.
Write down 8 as next digit of the result. 
Result so far: 8290.8
The remainder is 36 after subtracting 664 from 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Let's proceed to step 8:
360 divided by 83 is 4 with a remainder of 28.
The next digit of our result is 4. 
Result so far: 8290.84
Subtracting 332 from 360 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Let's proceed to step 9:
83 goes into 280 3 times with a remainder of 31.
Write down 3 as next digit of the result. 
Result so far: 8290.843
If we subtract 249 from 280, we get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Step 10:
If we divide 310 by 83, we get 3 and a remainder of 61.
Use 3 as the next digit of our solution. 
Result so far: 8290.8433
If we subtract 249 from 310, we get 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Our division results in 8290.8433 with a remaining 0.00061.