We look at the division of 57045629 by 766 
The aim is to understand the frequency of 766 in 57045629.

Moving on to step 1:
The number 766 fits into 5 0 times, leaving a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Include the next digit (7) from the dividend after 5, then repeat: 57 / 766

On to step 2:
766 goes into 57 0 times with a remainder of 57.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 57 and we're left with 57.
Bring next digit (0) of the dividend behind the 57 and repeat the process: 570 / 766

Going ahead to step 3:
766 can be fit into 570 0 times, resulting in a remainder of 570.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 570 and we're left with 570.
Fetch the next digit (4) from the dividend, attach it to 570 and continue: 5704 / 766

Step 4:
When dividing 5704 by 766, we get 7 with a remainder of 342.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
Subtracting 5362 from 5704 leaves us with 342.
Bring next digit (5) of the dividend behind the 342 and repeat the process: 3425 / 766

Advancing to step 5:
766 goes into 3425 4 times with a remainder of 361.
Use 4 as the next digit of our solution. 
Result so far: 74.0
Subtract 3064 from 3425 to get 361.
Take the next digit (6) from the dividend and append it to 361, then repeat: 3616 / 766

Step 6:
3616 divided by 766 is 4 with a remainder of 552.
Write down 4 as next digit of the result. 
Result so far: 744.0
Subtracting 3064 from 3616 leaves us with 552.
Take the next digit (2) from the dividend and append it to 552, then repeat: 5522 / 766

Going ahead to step 7:
If we divide 5522 by 766, we get 7 and a remainder of 160.
Use 7 as the next digit of our solution. 
Result so far: 7447.0
Subtract 5362 from 5522 to get 160.
Grab the next digit (9) from the dividend, add it to 160, then carry on: 1609 / 766

Moving on to step 8:
When dividing 1609 by 766, we get 2 with a remainder of 77.
Put 2 as the next digit of the answer. 
Result so far: 74472.0
If we take 1532 away from 1609, we end up with 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Step 9:
When dividing 770 by 766, we get 1 with a remainder of 4.
Record the quotient 1 as the next digit in the result. 
Result so far: 74472.1
If we subtract 766 from 770, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 10:
When dividing 40 by 766, we get 0 with a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 74472.1
If we subtract 0 from 40, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 11:
766 goes into 400 0 times with a remainder of 400.
Write down 0 as next digit of the result. 
Result so far: 74472.1
Deduct 0 from 400 and we're left with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

The final result is 74472.1 with a remainder of 0.04.