We're dividing 43978779 by 766 
The aim is to understand the frequency of 766 in 43978779.

Going ahead to step 1:
The number 766 fits into 4 0 times, leaving a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Bring next digit (3) of the dividend behind the 4 and repeat the process: 43 / 766

Advancing to step 2:
766 goes into 43 0 times with a remainder of 43.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 43 to get 43.
Grab the next digit (9) from the dividend, add it to 43, then carry on: 439 / 766

Let's proceed to step 3:
439 divided by 766 is 0 with a remainder of 439.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 439 to get 439.
Grab the next digit (7) from the dividend, add it to 439, then carry on: 4397 / 766

Moving on to step 4:
The number 766 fits into 4397 5 times, leaving a remainder of 567.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
Deduct 3830 from 4397 and we're left with 567.
Grab the next digit (8) from the dividend, add it to 567, then carry on: 5678 / 766

On to step 5:
766 can be fit into 5678 7 times, resulting in a remainder of 316.
Record the quotient 7 as the next digit in the result. 
Result so far: 57.0
The remainder is 316 after subtracting 5362 from 5678.
Append the next digit (7) from the dividend to 316 and continue with: 3167 / 766

Advancing to step 6:
If we divide 3167 by 766, we get 4 and a remainder of 103.
The next digit of our result is 4. 
Result so far: 574.0
Subtract 3064 from 3167 to get 103.
Include the next digit (7) from the dividend after 103, then repeat: 1037 / 766

Let's proceed to step 7:
When dividing 1037 by 766, we get 1 with a remainder of 271.
Put 1 as the next digit of the answer. 
Result so far: 5741.0
If we subtract 766 from 1037, we get 271.
Grab the next digit (9) from the dividend, add it to 271, then carry on: 2719 / 766

On to step 8:
766 can be fit into 2719 3 times, resulting in a remainder of 421.
The number 3 becomes the next digit in our result. 
Result so far: 57413.0
Subtract 2298 from 2719 to get 421.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4210, and continue the process.

Let's proceed to step 9:
766 can be fit into 4210 5 times, resulting in a remainder of 380.
Record the quotient 5 as the next digit in the result. 
Result so far: 57413.5
Subtract 3830 from 4210 to get 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

Let's proceed to step 10:
766 goes into 3800 4 times with a remainder of 736.
Use 4 as the next digit of our solution. 
Result so far: 57413.54
The remainder is 736 after subtracting 3064 from 3800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7360, and continue the process.

On to step 11:
766 can be fit into 7360 9 times, resulting in a remainder of 466.
Write down 9 as next digit of the result. 
Result so far: 57413.549
Deduct 6894 from 7360 and we're left with 466.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4660, and continue the process.

Step 12:
766 can be fit into 4660 6 times, resulting in a remainder of 64.
The next digit of our result is 6. 
Result so far: 57413.5496
Subtracting 4596 from 4660 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

On to step 13:
The number 766 fits into 640 0 times, leaving a remainder of 640.
Use 0 as the next digit of our solution. 
Result so far: 57413.5496
Subtract 0 from 640 to get 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

Let's proceed to step 14:
766 goes into 6400 8 times with a remainder of 272.
The next digit of our result is 8. 
Result so far: 57413.549608
Deduct 6128 from 6400 and we're left with 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

Step 15:
If we divide 2720 by 766, we get 3 and a remainder of 422.
Put 3 as the next digit of the answer. 
Result so far: 57413.5496083
Deduct 2298 from 2720 and we're left with 422.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4220, and continue the process.

Step 16:
766 can be fit into 4220 5 times, resulting in a remainder of 390.
The number 5 becomes the next digit in our result. 
Result so far: 57413.54960835
The remainder is 390 after subtracting 3830 from 4220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3900, and continue the process.

The final outcome is 57413.54960835, with a leftover of 3.9e-07.