27818991 divided by 243 
The aim is to understand the frequency of 243 in 27818991.

Going ahead to step 1:
2 divided by 243 is 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Grab the next digit (7) from the dividend, add it to 2, then carry on: 27 / 243

Advancing to step 2:
243 goes into 27 0 times with a remainder of 27.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 27 leaves us with 27.
Grab the next digit (8) from the dividend, add it to 27, then carry on: 278 / 243

Step 3:
When dividing 278 by 243, we get 1 with a remainder of 35.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 243 away from 278, we end up with 35.
Fetch the next digit (1) from the dividend, attach it to 35 and continue: 351 / 243

On to step 4:
351 divided by 243 is 1 with a remainder of 108.
Put 1 as the next digit of the answer. 
Result so far: 11.0
If we take 243 away from 351, we end up with 108.
Fetch the next digit (8) from the dividend, attach it to 108 and continue: 1088 / 243

Advancing to step 5:
1088 divided by 243 is 4 with a remainder of 116.
Record the quotient 4 as the next digit in the result. 
Result so far: 114.0
If we subtract 972 from 1088, we get 116.
Bring next digit (9) of the dividend behind the 116 and repeat the process: 1169 / 243

Going ahead to step 6:
243 can be fit into 1169 4 times, resulting in a remainder of 197.
Use 4 as the next digit of our solution. 
Result so far: 1144.0
If we subtract 972 from 1169, we get 197.
Append the next digit (9) from the dividend to 197 and continue with: 1979 / 243

Going ahead to step 7:
When dividing 1979 by 243, we get 8 with a remainder of 35.
Use 8 as the next digit of our solution. 
Result so far: 11448.0
If we take 1944 away from 1979, we end up with 35.
Append the next digit (1) from the dividend to 35 and continue with: 351 / 243

Moving on to step 8:
The number 243 fits into 351 1 times, leaving a remainder of 108.
The number 1 becomes the next digit in our result. 
Result so far: 114481.0
Subtracting 243 from 351 leaves us with 108.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

Advancing to step 9:
The number 243 fits into 1080 4 times, leaving a remainder of 108.
The next digit of our result is 4. 
Result so far: 114481.4
Subtract 972 from 1080 to 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.

Advancing to step 10:
243 goes into 1080 4 times with a remainder of 108.
The number 4 becomes the next digit in our result. 
Result so far: 114481.44
If we take 972 away from 1080, we end up with 108.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

The final result is 114481.44 with a remainder of 0.108.