We're dividing 83253 by 77 
The aim is to understand the frequency of 77 in 83253.

Step 1:
The number 77 fits into 8 0 times, leaving a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Grab the next digit (3) from the dividend, add it to 8, then carry on: 83 / 77

On to step 2:
77 can be fit into 83 1 times, resulting in a remainder of 6.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 77 from 83 and we're left with 6.
Append the next digit (2) from the dividend to 6 and continue with: 62 / 77

Let's proceed to step 3:
If we divide 62 by 77, we get 0 and a remainder of 62.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
Deduct 0 from 62 and we're left with 62.
Take the next digit (5) from the dividend and append it to 62, then repeat: 625 / 77

Going ahead to step 4:
625 divided by 77 is 8 with a remainder of 9.
Use 8 as the next digit of our solution. 
Result so far: 108.0
Subtracting 616 from 625 leaves us with 9.
Include the next digit (3) from the dividend after 9, then repeat: 93 / 77

Advancing to step 5:
If we divide 93 by 77, we get 1 and a remainder of 16.
Put 1 as the next digit of the answer. 
Result so far: 1081.0
The remainder is 16 after subtracting 77 from 93.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 6:
If we divide 160 by 77, we get 2 and a remainder of 6.
Write down 2 as next digit of the result. 
Result so far: 1081.2
Subtract 154 from 160 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 7:
77 goes into 60 0 times with a remainder of 60.
The next digit of our result is 0. 
Result so far: 1081.2
Deduct 0 from 60 and we're left with 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 8:
600 divided by 77 is 7 with a remainder of 61.
Record the quotient 7 as the next digit in the result. 
Result so far: 1081.207
Subtracting 539 from 600 leaves us with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Step 9:
77 goes into 610 7 times with a remainder of 71.
The next digit of our result is 7. 
Result so far: 1081.2077
If we subtract 539 from 610, we get 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

The final result is 1081.2077 with a remainder of 0.00071.