771325 ÷ 77 
The aim is to understand the frequency of 77 in 771325.

Let's proceed to step 1:
If we divide 7 by 77, we get 0 and a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Bring next digit (7) of the dividend behind the 7 and repeat the process: 77 / 77

Step 2:
If we divide 77 by 77, we get 1 and a remainder of 0.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 77 from 77 to get 0.
Append the next digit (1) from the dividend to 0 and continue with: 1 / 77

Step 3:
77 goes into 1 0 times with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 10.0
Subtracting 0 from 1 leaves us with 1.
Include the next digit (3) from the dividend after 1, then repeat: 13 / 77

Moving on to step 4:
The number 77 fits into 13 0 times, leaving a remainder of 13.
Write down 0 as next digit of the result. 
Result so far: 100.0
Subtracting 0 from 13 leaves us with 13.
Take the next digit (2) from the dividend and append it to 13, then repeat: 132 / 77

Going ahead to step 5:
77 can be fit into 132 1 times, resulting in a remainder of 55.
The number 1 becomes the next digit in our result. 
Result so far: 1001.0
Subtract 77 from 132 to get 55.
Fetch the next digit (5) from the dividend, attach it to 55 and continue: 555 / 77

Let's proceed to step 6:
The number 77 fits into 555 7 times, leaving a remainder of 16.
Write down 7 as next digit of the result. 
Result so far: 10017.0
Subtract 539 from 555 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 7:
77 can be fit into 160 2 times, resulting in a remainder of 6.
The number 2 becomes the next digit in our result. 
Result so far: 10017.2
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:
60 divided by 77 is 0 with a remainder of 60.
Use 0 as the next digit of our solution. 
Result so far: 10017.2
If we take 0 away from 60, we end up 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 9:
When dividing 600 by 77, we get 7 with a remainder of 61.
Use 7 as the next digit of our solution. 
Result so far: 10017.207
If we take 539 away from 600, we end up 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.

Moving on to step 10:
The number 77 fits into 610 7 times, leaving a remainder of 71.
The next digit of our result is 7. 
Result so far: 10017.2077
Deduct 539 from 610 and we're left 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 10017.2077, with a leftover of 0.00071.