21492668 divided by 181 
The aim is to understand the frequency of 181 in 21492668.

Moving on to step 1:
The number 181 fits into 2 0 times, leaving a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 181

Moving on to step 2:
21 divided by 181 is 0 with a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Append the next digit (4) from the dividend to 21 and continue with: 214 / 181

Going ahead to step 3:
181 can be fit into 214 1 times, resulting in a remainder of 33.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 181 from 214, we get 33.
Grab the next digit (9) from the dividend, add it to 33, then carry on: 339 / 181

Going ahead to step 4:
181 can be fit into 339 1 times, resulting in a remainder of 158.
Put 1 as the next digit of the answer. 
Result so far: 11.0
If we take 181 away from 339, we end up with 158.
Take the next digit (2) from the dividend and append it to 158, then repeat: 1582 / 181

On to step 5:
The number 181 fits into 1582 8 times, leaving a remainder of 134.
Record the quotient 8 as the next digit in the result. 
Result so far: 118.0
The remainder is 134 after subtracting 1448 from 1582.
Grab the next digit (6) from the dividend, add it to 134, then carry on: 1346 / 181

Step 6:
The number 181 fits into 1346 7 times, leaving a remainder of 79.
The next digit of our result is 7. 
Result so far: 1187.0
Subtract 1267 from 1346 to get 79.
Append the next digit (6) from the dividend to 79 and continue with: 796 / 181

Going ahead to step 7:
The number 181 fits into 796 4 times, leaving a remainder of 72.
Write down 4 as next digit of the result. 
Result so far: 11874.0
Deduct 724 from 796 and we're left with 72.
Fetch the next digit (8) from the dividend, attach it to 72 and continue: 728 / 181

Moving on to step 8:
181 can be fit into 728 4 times, resulting in a remainder of 4.
The next digit of our result is 4. 
Result so far: 118744.0
Subtract 724 from 728 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 9:
The number 181 fits into 40 0 times, leaving a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 118744.0
If we subtract 0 from 40, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 10:
When dividing 400 by 181, we get 2 with a remainder of 38.
Put 2 as the next digit of the answer. 
Result so far: 118744.02
If we take 362 away from 400, we end up with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

On to step 11:
If we divide 380 by 181, we get 2 and a remainder of 18.
Put 2 as the next digit of the answer. 
Result so far: 118744.022
The remainder is 18 after subtracting 362 from 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

After the division, we end up with 118744.022 and a remainder of 0.0018.