We look at the division of 90219126 by 881 
The aim is to understand the frequency of 881 in 90219126.

Going ahead to step 1:
When dividing 9 by 881, we get 0 with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Take the next digit (0) from the dividend and append it to 9, then repeat: 90 / 881

Advancing to step 2:
881 can be fit into 90 0 times, resulting in a remainder of 90.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 90 after subtracting 0 from 90.
Grab the next digit (2) from the dividend, add it to 90, then carry on: 902 / 881

Moving on to step 3:
881 goes into 902 1 times with a remainder of 21.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 881 from 902, we get 21.
Grab the next digit (1) from the dividend, add it to 21, then carry on: 211 / 881

Step 4:
881 can be fit into 211 0 times, resulting in a remainder of 211.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
If we take 0 away from 211, we end up with 211.
Fetch the next digit (9) from the dividend, attach it to 211 and continue: 2119 / 881

Let's proceed to step 5:
881 goes into 2119 2 times with a remainder of 357.
Write down 2 as next digit of the result. 
Result so far: 102.0
Subtracting 1762 from 2119 leaves us with 357.
Take the next digit (1) from the dividend and append it to 357, then repeat: 3571 / 881

Going ahead to step 6:
3571 divided by 881 is 4 with a remainder of 47.
Use 4 as the next digit of our solution. 
Result so far: 1024.0
Subtracting 3524 from 3571 leaves us with 47.
Include the next digit (2) from the dividend after 47, then repeat: 472 / 881

On to step 7:
If we divide 472 by 881, we get 0 and a remainder of 472.
Put 0 as the next digit of the answer. 
Result so far: 10240.0
Subtract 0 from 472 to get 472.
Take the next digit (6) from the dividend and append it to 472, then repeat: 4726 / 881

Moving on to step 8:
The number 881 fits into 4726 5 times, leaving a remainder of 321.
Write down 5 as next digit of the result. 
Result so far: 102405.0
Subtract 4405 from 4726 to get 321.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3210, and continue the process.

Step 9:
When dividing 3210 by 881, we get 3 with a remainder of 567.
The next digit of our result is 3. 
Result so far: 102405.3
If we take 2643 away from 3210, we end up with 567.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5670, and continue the process.

Let's proceed to step 10:
5670 divided by 881 is 6 with a remainder of 384.
Use 6 as the next digit of our solution. 
Result so far: 102405.36
If we subtract 5286 from 5670, we get 384.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3840, and continue the process.

Moving on to step 11:
When dividing 3840 by 881, we get 4 with a remainder of 316.
The number 4 becomes the next digit in our result. 
Result so far: 102405.364
If we subtract 3524 from 3840, we get 316.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3160, and continue the process.

Moving on to step 12:
If we divide 3160 by 881, we get 3 and a remainder of 517.
The number 3 becomes the next digit in our result. 
Result so far: 102405.3643
Deduct 2643 from 3160 and we're left with 517.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5170, and continue the process.

Going ahead to step 13:
The number 881 fits into 5170 5 times, leaving a remainder of 765.
The next digit of our result is 5. 
Result so far: 102405.36435
The remainder is 765 after subtracting 4405 from 5170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7650, and continue the process.

Moving on to step 14:
When dividing 7650 by 881, we get 8 with a remainder of 602.
Record the quotient 8 as the next digit in the result. 
Result so far: 102405.364358
If we subtract 7048 from 7650, we get 602.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6020, and continue the process.

Let's proceed to step 15:
The number 881 fits into 6020 6 times, leaving a remainder of 734.
Record the quotient 6 as the next digit in the result. 
Result so far: 102405.3643586
Deduct 5286 from 6020 and we're left with 734.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7340, and continue the process.

Moving on to step 16:
881 can be fit into 7340 8 times, resulting in a remainder of 292.
The number 8 becomes the next digit in our result. 
Result so far: 102405.36435868
If we subtract 7048 from 7340, we get 292.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2920, and continue the process.

In conclusion, the division gives 102405.36435868 with a balance of 2.92e-07.