We look at the division of 572535 by 77 
The aim is to understand the frequency of 77 in 572535.

Moving on to step 1:
77 goes into 5 0 times with a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Fetch the next digit (7) from the dividend, attach it to 5 and continue: 57 / 77

On to step 2:
When dividing 57 by 77, we get 0 with a remainder of 57.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 57, we get 57.
Fetch the next digit (2) from the dividend, attach it to 57 and continue: 572 / 77

Going ahead to step 3:
If we divide 572 by 77, we get 7 and a remainder of 33.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
Subtracting 539 from 572 leaves us with 33.
Include the next digit (5) from the dividend after 33, then repeat: 335 / 77

Let's proceed to step 4:
77 can be fit into 335 4 times, resulting in a remainder of 27.
Use 4 as the next digit of our solution. 
Result so far: 74.0
Subtracting 308 from 335 leaves us with 27.
Append the next digit (3) from the dividend to 27 and continue with: 273 / 77

On to step 5:
If we divide 273 by 77, we get 3 and a remainder of 42.
Put 3 as the next digit of the answer. 
Result so far: 743.0
The remainder is 42 after subtracting 231 from 273.
Take the next digit (5) from the dividend and append it to 42, then repeat: 425 / 77

Going ahead to step 6:
425 divided by 77 is 5 with a remainder of 40.
Use 5 as the next digit of our solution. 
Result so far: 7435.0
Subtract 385 from 425 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 7:
77 goes into 400 5 times with a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 7435.5
If we subtract 385 from 400, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 8:
The number 77 fits into 150 1 times, leaving a remainder of 73.
Put 1 as the next digit of the answer. 
Result so far: 7435.51
The remainder is 73 after subtracting 77 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Step 9:
77 goes into 730 9 times with a remainder of 37.
Record the quotient 9 as the next digit in the result. 
Result so far: 7435.519
Subtract 693 from 730 to get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

On to step 10:
370 divided by 77 is 4 with a remainder of 62.
The next digit of our result is 4. 
Result so far: 7435.5194
Subtracting 308 from 370 leaves us with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Step 11:
77 goes into 620 8 times with a remainder of 4.
Use 8 as the next digit of our solution. 
Result so far: 7435.51948
Subtract 616 from 620 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 12:
77 goes into 40 0 times with a remainder of 40.
Write down 0 as next digit of the result. 
Result so far: 7435.51948
Deduct 0 from 40 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 13:
400 divided by 77 is 5 with a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 7435.5194805
Deduct 385 from 400 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 14:
If we divide 150 by 77, we get 1 and a remainder of 73.
Use 1 as the next digit of our solution. 
Result so far: 7435.51948051
If we subtract 77 from 150, we get 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

The final result is 7435.51948051 with a remainder of 7.3e-08.