We look at the division of 647260 by 77 
The aim is to understand the frequency of 77 in 647260.

Going ahead to step 1:
6 divided by 77 is 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Take the next digit (4) from the dividend and append it to 6, then repeat: 64 / 77

Advancing to step 2:
77 can be fit into 64 0 times, resulting in a remainder of 64.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 64, we end up with 64.
Append the next digit (7) from the dividend to 64 and continue with: 647 / 77

Let's proceed to step 3:
77 can be fit into 647 8 times, resulting in a remainder of 31.
The next digit of our result is 8. 
Result so far: 8.0
Subtract 616 from 647 to get 31.
Fetch the next digit (2) from the dividend, attach it to 31 and continue: 312 / 77

Going ahead to step 4:
The number 77 fits into 312 4 times, leaving a remainder of 4.
The number 4 becomes the next digit in our result. 
Result so far: 84.0
Deduct 308 from 312 and we're left with 4.
Include the next digit (6) from the dividend after 4, then repeat: 46 / 77

Advancing to step 5:
If we divide 46 by 77, we get 0 and a remainder of 46.
Record the quotient 0 as the next digit in the result. 
Result so far: 840.0
Subtract 0 from 46 to get 46.
Bring next digit (0) of the dividend behind the 46 and repeat the process: 460 / 77

Going ahead to step 6:
77 can be fit into 460 5 times, resulting in a remainder of 75.
Use 5 as the next digit of our solution. 
Result so far: 8405.0
If we subtract 385 from 460, we get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Step 7:
77 goes into 750 9 times with a remainder of 57.
Put 9 as the next digit of the answer. 
Result so far: 8405.9
Deduct 693 from 750 and we're left with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Advancing to step 8:
570 divided by 77 is 7 with a remainder of 31.
Write down 7 as next digit of the result. 
Result so far: 8405.97
If we take 539 away from 570, we end up with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Going ahead to step 9:
If we divide 310 by 77, we get 4 and a remainder of 2.
The next digit of our result is 4. 
Result so far: 8405.974
If we take 308 away from 310, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 10:
If we divide 20 by 77, we get 0 and a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 8405.974
If we take 0 away from 20, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 11:
When dividing 200 by 77, we get 2 with a remainder of 46.
The next digit of our result is 2. 
Result so far: 8405.97402
Subtracting 154 from 200 leaves us with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Going ahead to step 12:
If we divide 460 by 77, we get 5 and a remainder of 75.
The next digit of our result is 5. 
Result so far: 8405.974025
The remainder is 75 after subtracting 385 from 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Advancing to step 13:
When dividing 750 by 77, we get 9 with a remainder of 57.
Put 9 as the next digit of the answer. 
Result so far: 8405.9740259
If we take 693 away from 750, we end up with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Advancing to step 14:
If we divide 570 by 77, we get 7 and a remainder of 31.
Record the quotient 7 as the next digit in the result. 
Result so far: 8405.97402597
Deduct 539 from 570 and we're left with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

The quotient of the division is 8405.97402597, and the remainder is 3.1e-08.