Let's divide 28738666 by 766
The aim is to understand the frequency of 766 in 28738666.

Going ahead to step 1:
The number 766 fits into 2 0 times, leaving a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Bring next digit (8) of the dividend behind the 2 and repeat the process: 28 / 766

Advancing to step 2:
28 divided by 766 is 0 with a remainder of 28.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 28 to get 28.
Append the next digit (7) from the dividend to 28 and continue with: 287 / 766

Advancing to step 3:
766 goes into 287 0 times with a remainder of 287.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 287 leaves us with 287.
Grab the next digit (3) from the dividend, add it to 287, then carry on: 2873 / 766

Going ahead to step 4:
766 goes into 2873 3 times with a remainder of 575.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Subtract 2298 from 2873 to get 575.
Fetch the next digit (8) from the dividend, attach it to 575 and continue: 5758 / 766

Advancing to step 5:
5758 divided by 766 is 7 with a remainder of 396.
The next digit of our result is 7. 
Result so far: 37.0
Subtract 5362 from 5758 to get 396.
Take the next digit (6) from the dividend and append it to 396, then repeat: 3966 / 766

On to step 6:
When dividing 3966 by 766, we get 5 with a remainder of 136.
The next digit of our result is 5. 
Result so far: 375.0
Deduct 3830 from 3966 and we're left with 136.
Include the next digit (6) from the dividend after 136, then repeat: 1366 / 766

Step 7:
If we divide 1366 by 766, we get 1 and a remainder of 600.
Record the quotient 1 as the next digit in the result. 
Result so far: 3751.0
The remainder is 600 after subtracting 766 from 1366.
Take the next digit (6) from the dividend and append it to 600, then repeat: 6006 / 766

Step 8:
When dividing 6006 by 766, we get 7 with a remainder of 644.
The number 7 becomes the next digit in our result. 
Result so far: 37517.0
Subtracting 5362 from 6006 leaves us with 644.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6440, and continue the process.

Moving on to step 9:
766 can be fit into 6440 8 times, resulting in a remainder of 312.
The number 8 becomes the next digit in our result. 
Result so far: 37517.8
If we take 6128 away from 6440, we end up with 312.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3120, and continue the process.

Step 10:
When dividing 3120 by 766, we get 4 with a remainder of 56.
The number 4 becomes the next digit in our result. 
Result so far: 37517.84
Subtracting 3064 from 3120 leaves us with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Advancing to step 11:
560 divided by 766 is 0 with a remainder of 560.
The number 0 becomes the next digit in our result. 
Result so far: 37517.84
If we subtract 0 from 560, we get 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

Let's proceed to step 12:
766 goes into 5600 7 times with a remainder of 238.
Use 7 as the next digit of our solution. 
Result so far: 37517.8407
Subtract 5362 from 5600 to get 238.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2380, and continue the process.

Going ahead to step 13:
766 can be fit into 2380 3 times, resulting in a remainder of 82.
Record the quotient 3 as the next digit in the result. 
Result so far: 37517.84073
Subtract 2298 from 2380 to get 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Moving on to step 14:
820 divided by 766 is 1 with a remainder of 54.
Use 1 as the next digit of our solution. 
Result so far: 37517.840731
Deduct 766 from 820 and we're left with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

On to step 15:
The number 766 fits into 540 0 times, leaving a remainder of 540.
Use 0 as the next digit of our solution. 
Result so far: 37517.840731
Deduct 0 from 540 and we're left with 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5400, and continue the process.

Let's proceed to step 16:
The number 766 fits into 5400 7 times, leaving a remainder of 38.
Use 7 as the next digit of our solution. 
Result so far: 37517.84073107
Subtract 5362 from 5400 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

After the division, we end up with 37517.84073107 and a remainder of 3.8e-08.