We look at the division of 63919034 by 766 
The aim is to understand the frequency of 766 in 63919034.

Going ahead to step 1:
When dividing 6 by 766, we get 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Take the next digit (3) from the dividend and append it to 6, then repeat: 63 / 766

Moving on to step 2:
766 can be fit into 63 0 times, resulting in a remainder of 63.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 63 after subtracting 0 from 63.
Append the next digit (9) from the dividend to 63 and continue with: 639 / 766

Moving on to step 3:
If we divide 639 by 766, we get 0 and a remainder of 639.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 639 after subtracting 0 from 639.
Include the next digit (1) from the dividend after 639, then repeat: 6391 / 766

Step 4:
When dividing 6391 by 766, we get 8 with a remainder of 263.
Use 8 as the next digit of our solution. 
Result so far: 8.0
The remainder is 263 after subtracting 6128 from 6391.
Take the next digit (9) from the dividend and append it to 263, then repeat: 2639 / 766

On to step 5:
766 goes into 2639 3 times with a remainder of 341.
Put 3 as the next digit of the answer. 
Result so far: 83.0
Deduct 2298 from 2639 and we're left with 341.
Fetch the next digit (0) from the dividend, attach it to 341 and continue: 3410 / 766

Advancing to step 6:
The number 766 fits into 3410 4 times, leaving a remainder of 346.
Put 4 as the next digit of the answer. 
Result so far: 834.0
Deduct 3064 from 3410 and we're left with 346.
Append the next digit (3) from the dividend to 346 and continue with: 3463 / 766

Step 7:
When dividing 3463 by 766, we get 4 with a remainder of 399.
Use 4 as the next digit of our solution. 
Result so far: 8344.0
Subtract 3064 from 3463 to get 399.
Fetch the next digit (4) from the dividend, attach it to 399 and continue: 3994 / 766

Let's proceed to step 8:
766 can be fit into 3994 5 times, resulting in a remainder of 164.
The number 5 becomes the next digit in our result. 
Result so far: 83445.0
Subtracting 3830 from 3994 leaves us with 164.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1640, and continue the process.

Let's proceed to step 9:
1640 divided by 766 is 2 with a remainder of 108.
The next digit of our result is 2. 
Result so far: 83445.2
If we subtract 1532 from 1640, we get 108.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

Moving on to step 10:
When dividing 1080 by 766, we get 1 with a remainder of 314.
The next digit of our result is 1. 
Result so far: 83445.21
Subtract 766 from 1080 to get 314.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3140, and continue the process.

Moving on to step 11:
3140 divided by 766 is 4 with a remainder of 76.
The number 4 becomes the next digit in our result. 
Result so far: 83445.214
Subtracting 3064 from 3140 leaves us with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Advancing to step 12:
The number 766 fits into 760 0 times, leaving a remainder of 760.
The number 0 becomes the next digit in our result. 
Result so far: 83445.214
Subtracting 0 from 760 leaves us with 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7600, and continue the process.

Step 13:
If we divide 7600 by 766, we get 9 and a remainder of 706.
The number 9 becomes the next digit in our result. 
Result so far: 83445.21409
Subtract 6894 from 7600 to get 706.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7060, and continue the process.

Let's proceed to step 14:
The number 766 fits into 7060 9 times, leaving a remainder of 166.
Use 9 as the next digit of our solution. 
Result so far: 83445.214099
If we subtract 6894 from 7060, we get 166.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1660, and continue the process.

The final result is 83445.214099 with a remainder of 1.66e-05.