We're dividing 76514812 by 661 
The aim is to understand the frequency of 661 in 76514812.

Step 1:
661 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
Deduct 0 from 7 and we're left with 7.
Grab the next digit (6) from the dividend, add it to 7, then carry on: 76 / 661

Advancing to step 2:
661 can be fit into 76 0 times, resulting in a remainder of 76.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 76 leaves us with 76.
Include the next digit (5) from the dividend after 76, then repeat: 765 / 661

Step 3:
When dividing 765 by 661, we get 1 with a remainder of 104.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 661 from 765 leaves us with 104.
Grab the next digit (1) from the dividend, add it to 104, then carry on: 1041 / 661

Let's proceed to step 4:
661 goes into 1041 1 times with a remainder of 380.
The next digit of our result is 1. 
Result so far: 11.0
Subtracting 661 from 1041 leaves us with 380.
Take the next digit (4) from the dividend and append it to 380, then repeat: 3804 / 661

Step 5:
661 can be fit into 3804 5 times, resulting in a remainder of 499.
The next digit of our result is 5. 
Result so far: 115.0
If we subtract 3305 from 3804, we get 499.
Include the next digit (8) from the dividend after 499, then repeat: 4998 / 661

Step 6:
661 goes into 4998 7 times with a remainder of 371.
Use 7 as the next digit of our solution. 
Result so far: 1157.0
The remainder is 371 after subtracting 4627 from 4998.
Bring next digit (1) of the dividend behind the 371 and repeat the process: 3711 / 661

Moving on to step 7:
The number 661 fits into 3711 5 times, leaving a remainder of 406.
Put 5 as the next digit of the answer. 
Result so far: 11575.0
If we subtract 3305 from 3711, we get 406.
Include the next digit (2) from the dividend after 406, then repeat: 4062 / 661

Moving on to step 8:
661 goes into 4062 6 times with a remainder of 96.
Put 6 as the next digit of the answer. 
Result so far: 115756.0
Subtracting 3966 from 4062 leaves us with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Moving on to step 9:
When dividing 960 by 661, we get 1 with a remainder of 299.
The next digit of our result is 1. 
Result so far: 115756.1
The remainder is 299 after subtracting 661 from 960.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2990, and continue the process.

Advancing to step 10:
The number 661 fits into 2990 4 times, leaving a remainder of 346.
Put 4 as the next digit of the answer. 
Result so far: 115756.14
Deduct 2644 from 2990 and we're left with 346.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3460, and continue the process.

Step 11:
If we divide 3460 by 661, we get 5 and a remainder of 155.
Put 5 as the next digit of the answer. 
Result so far: 115756.145
Subtracting 3305 from 3460 leaves us with 155.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1550, and continue the process.

Let's proceed to step 12:
The number 661 fits into 1550 2 times, leaving a remainder of 228.
The number 2 becomes the next digit in our result. 
Result so far: 115756.1452
Subtracting 1322 from 1550 leaves us with 228.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2280, and continue the process.

Advancing to step 13:
661 goes into 2280 3 times with a remainder of 297.
The next digit of our result is 3. 
Result so far: 115756.14523
Subtract 1983 from 2280 to get 297.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2970, and continue the process.

Going ahead to step 14:
When dividing 2970 by 661, we get 4 with a remainder of 326.
Use 4 as the next digit of our solution. 
Result so far: 115756.145234
The remainder is 326 after subtracting 2644 from 2970.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3260, and continue the process.

Moving on to step 15:
When dividing 3260 by 661, we get 4 with a remainder of 616.
Put 4 as the next digit of the answer. 
Result so far: 115756.1452344
Subtracting 2644 from 3260 leaves us with 616.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6160, and continue the process.

The final outcome is 115756.1452344, with a leftover of 6.16e-06.