We look at the division of 720488 by 77 
The aim is to understand the frequency of 77 in 720488.

Let's proceed to step 1:
77 goes into 7 0 times with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Append the next digit (2) from the dividend to 7 and continue with: 72 / 77

Going ahead to step 2:
72 divided by 77 is 0 with a remainder of 72.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 72 after subtracting 0 from 72.
Grab the next digit (0) from the dividend, add it to 72, then carry on: 720 / 77

Advancing to step 3:
77 goes into 720 9 times with a remainder of 27.
Use 9 as the next digit of our solution. 
Result so far: 9.0
Deduct 693 from 720 and we're left with 27.
Include the next digit (4) from the dividend after 27, then repeat: 274 / 77

On to step 4:
When dividing 274 by 77, we get 3 with a remainder of 43.
The number 3 becomes the next digit in our result. 
Result so far: 93.0
The remainder is 43 after subtracting 231 from 274.
Grab the next digit (8) from the dividend, add it to 43, then carry on: 438 / 77

Step 5:
When dividing 438 by 77, we get 5 with a remainder of 53.
The next digit of our result is 5. 
Result so far: 935.0
If we subtract 385 from 438, we get 53.
Take the next digit (8) from the dividend and append it to 53, then repeat: 538 / 77

Moving on to step 6:
77 goes into 538 6 times with a remainder of 76.
Write down 6 as next digit of the result. 
Result so far: 9356.0
Deduct 462 from 538 and we're left with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

On to step 7:
77 goes into 760 9 times with a remainder of 67.
Record the quotient 9 as the next digit in the result. 
Result so far: 9356.9
Subtracting 693 from 760 leaves us with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Moving on to step 8:
77 goes into 670 8 times with a remainder of 54.
Use 8 as the next digit of our solution. 
Result so far: 9356.98
Subtract 616 from 670 to get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Moving on to step 9:
77 can be fit into 540 7 times, resulting in a remainder of 1.
Use 7 as the next digit of our solution. 
Result so far: 9356.987
If we subtract 539 from 540, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 10:
10 divided by 77 is 0 with a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 9356.987
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 11:
If we divide 100 by 77, we get 1 and a remainder of 23.
Write down 1 as next digit of the result. 
Result so far: 9356.98701
If we subtract 77 from 100, we get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Advancing to step 12:
77 goes into 230 2 times with a remainder of 76.
Put 2 as the next digit of the answer. 
Result so far: 9356.987012
Deduct 154 from 230 and we're left with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Let's proceed to step 13:
The number 77 fits into 760 9 times, leaving a remainder of 67.
Put 9 as the next digit of the answer. 
Result so far: 9356.9870129
Deduct 693 from 760 and we're left with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Moving on to step 14:
If we divide 670 by 77, we get 8 and a remainder of 54.
The number 8 becomes the next digit in our result. 
Result so far: 9356.98701298
The remainder is 54 after subtracting 616 from 670.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Our division results in 9356.98701298 with a remaining 5.4e-08.