We look at the division of 766188 by 77 
The aim is to understand the frequency of 77 in 766188.

Moving on to step 1:
77 goes into 7 0 times with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Bring next digit (6) of the dividend behind the 7 and repeat the process: 76 / 77

On to step 2:
76 divided by 77 is 0 with a remainder of 76.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 76, we end up with 76.
Take the next digit (6) from the dividend and append it to 76, then repeat: 766 / 77

Going ahead to step 3:
If we divide 766 by 77, we get 9 and a remainder of 73.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
Deduct 693 from 766 and we're left with 73.
Fetch the next digit (1) from the dividend, attach it to 73 and continue: 731 / 77

Moving on to step 4:
The number 77 fits into 731 9 times, leaving a remainder of 38.
Record the quotient 9 as the next digit in the result. 
Result so far: 99.0
If we take 693 away from 731, we end up with 38.
Fetch the next digit (8) from the dividend, attach it to 38 and continue: 388 / 77

Advancing to step 5:
388 divided by 77 is 5 with a remainder of 3.
The next digit of our result is 5. 
Result so far: 995.0
Subtracting 385 from 388 leaves us with 3.
Include the next digit (8) from the dividend after 3, then repeat: 38 / 77

Moving on to step 6:
The number 77 fits into 38 0 times, leaving a remainder of 38.
Put 0 as the next digit of the answer. 
Result so far: 9950.0
If we take 0 away from 38, we end up with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Let's proceed to step 7:
The number 77 fits into 380 4 times, leaving a remainder of 72.
Use 4 as the next digit of our solution. 
Result so far: 9950.4
Deduct 308 from 380 and we're left with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Step 8:
77 goes into 720 9 times with a remainder of 27.
The next digit of our result is 9. 
Result so far: 9950.49
If we take 693 away from 720, we end up with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

On to step 9:
When dividing 270 by 77, we get 3 with a remainder of 39.
Put 3 as the next digit of the answer. 
Result so far: 9950.493
If we take 231 away from 270, we end up with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Moving on to step 10:
77 goes into 390 5 times with a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 9950.4935
If we take 385 away from 390, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 11:
The number 77 fits into 50 0 times, leaving a remainder of 50.
The number 0 becomes the next digit in our result. 
Result so far: 9950.4935
The remainder is 50 after subtracting 0 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Moving on to step 12:
500 divided by 77 is 6 with a remainder of 38.
The next digit of our result is 6. 
Result so far: 9950.493506
If we take 462 away from 500, we end up with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Going ahead to step 13:
380 divided by 77 is 4 with a remainder of 72.
Put 4 as the next digit of the answer. 
Result so far: 9950.4935064
Subtract 308 from 380 to get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Advancing to step 14:
77 goes into 720 9 times with a remainder of 27.
The number 9 becomes the next digit in our result. 
Result so far: 9950.49350649
If we subtract 693 from 720, we get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

The final result is 9950.49350649 with a remainder of 2.7e-08.