We look at the division of 73666799 by 881 
The aim is to understand the frequency of 881 in 73666799.

Advancing to step 1:
The number 881 fits into 7 0 times, leaving a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Take the next digit (3) from the dividend and append it to 7, then repeat: 73 / 881

Going ahead to step 2:
881 can be fit into 73 0 times, resulting in a remainder of 73.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 73 and we're left with 73.
Include the next digit (6) from the dividend after 73, then repeat: 736 / 881

Advancing to step 3:
881 goes into 736 0 times with a remainder of 736.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 736 after subtracting 0 from 736.
Bring next digit (6) of the dividend behind the 736 and repeat the process: 7366 / 881

Advancing to step 4:
881 goes into 7366 8 times with a remainder of 318.
The next digit of our result is 8. 
Result so far: 8.0
If we subtract 7048 from 7366, we get 318.
Include the next digit (6) from the dividend after 318, then repeat: 3186 / 881

Moving on to step 5:
When dividing 3186 by 881, we get 3 with a remainder of 543.
The next digit of our result is 3. 
Result so far: 83.0
If we take 2643 away from 3186, we end up with 543.
Take the next digit (7) from the dividend and append it to 543, then repeat: 5437 / 881

On to step 6:
If we divide 5437 by 881, we get 6 and a remainder of 151.
Record the quotient 6 as the next digit in the result. 
Result so far: 836.0
If we subtract 5286 from 5437, we get 151.
Fetch the next digit (9) from the dividend, attach it to 151 and continue: 1519 / 881

Step 7:
881 can be fit into 1519 1 times, resulting in a remainder of 638.
Put 1 as the next digit of the answer. 
Result so far: 8361.0
Deduct 881 from 1519 and we're left with 638.
Append the next digit (9) from the dividend to 638 and continue with: 6389 / 881

On to step 8:
881 can be fit into 6389 7 times, resulting in a remainder of 222.
The number 7 becomes the next digit in our result. 
Result so far: 83617.0
If we take 6167 away from 6389, we end up with 222.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2220, and continue the process.

Moving on to step 9:
The number 881 fits into 2220 2 times, leaving a remainder of 458.
The next digit of our result is 2. 
Result so far: 83617.2
Subtract 1762 from 2220 to get 458.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4580, and continue the process.

On to step 10:
881 can be fit into 4580 5 times, resulting in a remainder of 175.
The next digit of our result is 5. 
Result so far: 83617.25
Subtract 4405 from 4580 to get 175.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1750, and continue the process.

Moving on to step 11:
881 can be fit into 1750 1 times, resulting in a remainder of 869.
Record the quotient 1 as the next digit in the result. 
Result so far: 83617.251
Deduct 881 from 1750 and we're left with 869.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8690, and continue the process.

Advancing to step 12:
8690 divided by 881 is 9 with a remainder of 761.
The next digit of our result is 9. 
Result so far: 83617.2519
The remainder is 761 after subtracting 7929 from 8690.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7610, and continue the process.

Going ahead to step 13:
When dividing 7610 by 881, we get 8 with a remainder of 562.
The next digit of our result is 8. 
Result so far: 83617.25198
Deduct 7048 from 7610 and we're left with 562.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5620, and continue the process.

Let's proceed to step 14:
If we divide 5620 by 881, we get 6 and a remainder of 334.
Put 6 as the next digit of the answer. 
Result so far: 83617.251986
Subtracting 5286 from 5620 leaves us with 334.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3340, and continue the process.

Moving on to step 15:
3340 divided by 881 is 3 with a remainder of 697.
Record the quotient 3 as the next digit in the result. 
Result so far: 83617.2519863
If we take 2643 away from 3340, we end up with 697.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6970, and continue the process.

Let's proceed to step 16:
The number 881 fits into 6970 7 times, leaving a remainder of 803.
The next digit of our result is 7. 
Result so far: 83617.25198637
Subtracting 6167 from 6970 leaves us with 803.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8030, and continue the process.

Our division results in 83617.25198637 with a remaining 8.03e-07.