75645275 ÷ 577 
The aim is to understand the frequency of 577 in 75645275.

Advancing to step 1:
The number 577 fits into 7 0 times, leaving a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Include the next digit (5) from the dividend after 7, then repeat: 75 / 577

On to step 2:
577 goes into 75 0 times with a remainder of 75.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 75 leaves us with 75.
Include the next digit (6) from the dividend after 75, then repeat: 756 / 577

Let's proceed to step 3:
756 divided by 577 is 1 with a remainder of 179.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 577 from 756 and we're left with 179.
Grab the next digit (4) from the dividend, add it to 179, then carry on: 1794 / 577

Going ahead to step 4:
The number 577 fits into 1794 3 times, leaving a remainder of 63.
Use 3 as the next digit of our solution. 
Result so far: 13.0
If we take 1731 away from 1794, we end up with 63.
Bring next digit (5) of the dividend behind the 63 and repeat the process: 635 / 577

On to step 5:
635 divided by 577 is 1 with a remainder of 58.
The number 1 becomes the next digit in our result. 
Result so far: 131.0
Subtracting 577 from 635 leaves us with 58.
Fetch the next digit (2) from the dividend, attach it to 58 and continue: 582 / 577

Advancing to step 6:
577 can be fit into 582 1 times, resulting in a remainder of 5.
Write down 1 as next digit of the result. 
Result so far: 1311.0
If we subtract 577 from 582, we get 5.
Take the next digit (7) from the dividend and append it to 5, then repeat: 57 / 577

Let's proceed to step 7:
577 goes into 57 0 times with a remainder of 57.
The next digit of our result is 0. 
Result so far: 13110.0
Subtract 0 from 57 to get 57.
Bring next digit (5) of the dividend behind the 57 and repeat the process: 575 / 577

On to step 8:
If we divide 575 by 577, we get 0 and a remainder of 575.
Record the quotient 0 as the next digit in the result. 
Result so far: 131100.0
Subtracting 0 from 575 leaves us with 575.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5750, and continue the process.

Moving on to step 9:
5750 divided by 577 is 9 with a remainder of 557.
Write down 9 as next digit of the result. 
Result so far: 131100.9
If we subtract 5193 from 5750, we get 557.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5570, and continue the process.

Moving on to step 10:
577 can be fit into 5570 9 times, resulting in a remainder of 377.
Put 9 as the next digit of the answer. 
Result so far: 131100.99
If we take 5193 away from 5570, we end up with 377.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3770, and continue the process.

The final outcome is 131100.99, with a leftover of 0.377.