81668354 ÷ 759 
The aim is to understand the frequency of 759 in 81668354.

Let's proceed to step 1:
The number 759 fits into 8 0 times, leaving a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Bring next digit (1) of the dividend behind the 8 and repeat the process: 81 / 759

Moving on to step 2:
81 divided by 759 is 0 with a remainder of 81.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 81 after subtracting 0 from 81.
Bring next digit (6) of the dividend behind the 81 and repeat the process: 816 / 759

On to step 3:
759 goes into 816 1 times with a remainder of 57.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 57 after subtracting 759 from 816.
Fetch the next digit (6) from the dividend, attach it to 57 and continue: 576 / 759

Going ahead to step 4:
576 divided by 759 is 0 with a remainder of 576.
Use 0 as the next digit of our solution. 
Result so far: 10.0
Deduct 0 from 576 and we're left with 576.
Fetch the next digit (8) from the dividend, attach it to 576 and continue: 5768 / 759

Step 5:
When dividing 5768 by 759, we get 7 with a remainder of 455.
The number 7 becomes the next digit in our result. 
Result so far: 107.0
Subtract 5313 from 5768 to get 455.
Fetch the next digit (3) from the dividend, attach it to 455 and continue: 4553 / 759

Step 6:
If we divide 4553 by 759, we get 5 and a remainder of 758.
The next digit of our result is 5. 
Result so far: 1075.0
Deduct 3795 from 4553 and we're left with 758.
Append the next digit (5) from the dividend to 758 and continue with: 7585 / 759

Going ahead to step 7:
If we divide 7585 by 759, we get 9 and a remainder of 754.
Write down 9 as next digit of the result. 
Result so far: 10759.0
Deduct 6831 from 7585 and we're left with 754.
Include the next digit (4) from the dividend after 754, then repeat: 7544 / 759

Let's proceed to step 8:
7544 divided by 759 is 9 with a remainder of 713.
The number 9 becomes the next digit in our result. 
Result so far: 107599.0
Subtract 6831 from 7544 to get 713.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7130, and continue the process.

Step 9:
The number 759 fits into 7130 9 times, leaving a remainder of 299.
The number 9 becomes the next digit in our result. 
Result so far: 107599.9
Subtract 6831 from 7130 to get 299.
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:
759 can be fit into 2990 3 times, resulting in a remainder of 713.
Put 3 as the next digit of the answer. 
Result so far: 107599.93
The remainder is 713 after subtracting 2277 from 2990.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7130, and continue the process.

Going ahead to step 11:
The number 759 fits into 7130 9 times, leaving a remainder of 299.
Use 9 as the next digit of our solution. 
Result so far: 107599.939
If we subtract 6831 from 7130, we get 299.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2990, and continue the process.

Step 12:
2990 divided by 759 is 3 with a remainder of 713.
The next digit of our result is 3. 
Result so far: 107599.9393
Subtract 2277 from 2990 to get 713.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7130, and continue the process.

Moving on to step 13:
The number 759 fits into 7130 9 times, leaving a remainder of 299.
Use 9 as the next digit of our solution. 
Result so far: 107599.93939
If we subtract 6831 from 7130, we get 299.
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 14:
759 can be fit into 2990 3 times, resulting in a remainder of 713.
Use 3 as the next digit of our solution. 
Result so far: 107599.939393
If we subtract 2277 from 2990, we get 713.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7130, and continue the process.

Advancing to step 15:
If we divide 7130 by 759, we get 9 and a remainder of 299.
Put 9 as the next digit of the answer. 
Result so far: 107599.9393939
Deduct 6831 from 7130 and we're left with 299.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2990, and continue the process.

On to step 16:
The number 759 fits into 2990 3 times, leaving a remainder of 713.
Record the quotient 3 as the next digit in the result. 
Result so far: 107599.93939393
Subtract 2277 from 2990 to get 713.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7130, and continue the process.

The final result is 107599.93939393 with a remainder of 7.13e-07.