We look at the division of 757080 by 77 
The aim is to understand the frequency of 77 in 757080.

Moving on to step 1:
77 can be fit into 7 0 times, resulting in a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Include the next digit (5) from the dividend after 7, then repeat: 75 / 77

On to step 2:
The number 77 fits into 75 0 times, leaving 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.
Bring next digit (7) of the dividend behind the 75 and repeat the process: 757 / 77

Step 3:
The number 77 fits into 757 9 times, leaving a remainder of 64.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
Subtract 693 from 757 to get 64.
Take the next digit (0) from the dividend and append it to 64, then repeat: 640 / 77

Going ahead to step 4:
When dividing 640 by 77, we get 8 with a remainder of 24.
The next digit of our result is 8. 
Result so far: 98.0
Subtracting 616 from 640 leaves us with 24.
Take the next digit (8) from the dividend and append it to 24, then repeat: 248 / 77

Let's proceed to step 5:
The number 77 fits into 248 3 times, leaving a remainder of 17.
Use 3 as the next digit of our solution. 
Result so far: 983.0
If we subtract 231 from 248, we get 17.
Include the next digit (0) from the dividend after 17, then repeat: 170 / 77

Step 6:
If we divide 170 by 77, we get 2 and a remainder of 16.
Use 2 as the next digit of our solution. 
Result so far: 9832.0
The remainder is 16 after subtracting 154 from 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 7:
77 goes into 160 2 times with a remainder of 6.
The next digit of our result is 2. 
Result so far: 9832.2
If we take 154 away from 160, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 8:
The number 77 fits into 60 0 times, leaving a remainder of 60.
Use 0 as the next digit of our solution. 
Result so far: 9832.2
Subtracting 0 from 60 leaves us 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.

Moving on to step 9:
600 divided by 77 is 7 with a remainder of 61.
Write down 7 as next digit of the result. 
Result so far: 9832.207
Deduct 539 from 600 and we're left 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.

Advancing to step 10:
The number 77 fits into 610 7 times, leaving a remainder of 71.
Put 7 as the next digit of the answer. 
Result so far: 9832.2077
Subtracting 539 from 610 leaves us with 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 outcome is 9832.2077, with a leftover of 0.00071.