We look at the division of 272989 by 77 
The aim is to understand the frequency of 77 in 272989.

On to step 1:
77 goes into 2 0 times with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Fetch the next digit (7) from the dividend, attach it to 2 and continue: 27 / 77

Step 2:
77 can be fit into 27 0 times, resulting in a remainder of 27.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 27 after subtracting 0 from 27.
Grab the next digit (2) from the dividend, add it to 27, then carry on: 272 / 77

Advancing to step 3:
When dividing 272 by 77, we get 3 with a remainder of 41.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
The remainder is 41 after subtracting 231 from 272.
Bring next digit (9) of the dividend behind the 41 and repeat the process: 419 / 77

Let's proceed to step 4:
The number 77 fits into 419 5 times, leaving a remainder of 34.
Put 5 as the next digit of the answer. 
Result so far: 35.0
Subtract 385 from 419 to get 34.
Take the next digit (8) from the dividend and append it to 34, then repeat: 348 / 77

Let's proceed to step 5:
If we divide 348 by 77, we get 4 and a remainder of 40.
Record the quotient 4 as the next digit in the result. 
Result so far: 354.0
If we take 308 away from 348, we end up with 40.
Bring next digit (9) of the dividend behind the 40 and repeat the process: 409 / 77

Going ahead to step 6:
409 divided by 77 is 5 with a remainder of 24.
The number 5 becomes the next digit in our result. 
Result so far: 3545.0
Subtract 385 from 409 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.

Moving on to step 7:
77 goes into 240 3 times with a remainder of 9.
Write down 3 as next digit of the result. 
Result so far: 3545.3
If we subtract 231 from 240, 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.

Step 8:
90 divided by 77 is 1 with a remainder of 13.
The next digit of our result is 1. 
Result so far: 3545.31
Deduct 77 from 90 and we're left 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.

Step 9:
77 goes into 130 1 times with a remainder of 53.
Use 1 as the next digit of our solution. 
Result so far: 3545.311
Deduct 77 from 130 and we're left with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

The final result is 3545.311 with a remainder of 0.0053.