We're dividing 21927787 by 405 
The aim is to understand the frequency of 405 in 21927787.

Let's proceed to step 1:
405 can be fit into 2 0 times, resulting in a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 405

Step 2:
405 goes into 21 0 times with a remainder of 21.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 21 after subtracting 0 from 21.
Grab the next digit (9) from the dividend, add it to 21, then carry on: 219 / 405

Moving on to step 3:
405 goes into 219 0 times with a remainder of 219.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 219 to get 219.
Grab the next digit (2) from the dividend, add it to 219, then carry on: 2192 / 405

On to step 4:
If we divide 2192 by 405, we get 5 and a remainder of 167.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
If we subtract 2025 from 2192, we get 167.
Grab the next digit (7) from the dividend, add it to 167, then carry on: 1677 / 405

Let's proceed to step 5:
If we divide 1677 by 405, we get 4 and a remainder of 57.
The number 4 becomes the next digit in our result. 
Result so far: 54.0
The remainder is 57 after subtracting 1620 from 1677.
Fetch the next digit (7) from the dividend, attach it to 57 and continue: 577 / 405

Going ahead to step 6:
405 can be fit into 577 1 times, resulting in a remainder of 172.
Put 1 as the next digit of the answer. 
Result so far: 541.0
The remainder is 172 after subtracting 405 from 577.
Append the next digit (8) from the dividend to 172 and continue with: 1728 / 405

Advancing to step 7:
405 can be fit into 1728 4 times, resulting in a remainder of 108.
The number 4 becomes the next digit in our result. 
Result so far: 5414.0
If we take 1620 away from 1728, we end up with 108.
Fetch the next digit (7) from the dividend, attach it to 108 and continue: 1087 / 405

Step 8:
405 can be fit into 1087 2 times, resulting in a remainder of 277.
Write down 2 as next digit of the result. 
Result so far: 54142.0
Subtract 810 from 1087 to get 277.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2770, and continue the process.

Step 9:
2770 divided by 405 is 6 with a remainder of 340.
Put 6 as the next digit of the answer. 
Result so far: 54142.6
If we subtract 2430 from 2770, we get 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

Step 10:
405 goes into 3400 8 times with a remainder of 160.
Write down 8 as next digit of the result. 
Result so far: 54142.68
The remainder is 160 after subtracting 3240 from 3400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Let's proceed to step 11:
1600 divided by 405 is 3 with a remainder of 385.
The number 3 becomes the next digit in our result. 
Result so far: 54142.683
Subtracting 1215 from 1600 leaves us with 385.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3850, and continue the process.

Going ahead to step 12:
When dividing 3850 by 405, we get 9 with a remainder of 205.
The number 9 becomes the next digit in our result. 
Result so far: 54142.6839
The remainder is 205 after subtracting 3645 from 3850.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2050, and continue the process.

On to step 13:
The number 405 fits into 2050 5 times, leaving a remainder of 25.
Use 5 as the next digit of our solution. 
Result so far: 54142.68395
If we take 2025 away from 2050, we end up with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Moving on to step 14:
If we divide 250 by 405, we get 0 and a remainder of 250.
Write down 0 as next digit of the result. 
Result so far: 54142.68395
Subtracting 0 from 250 leaves us with 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Going ahead to step 15:
2500 divided by 405 is 6 with a remainder of 70.
Record the quotient 6 as the next digit in the result. 
Result so far: 54142.6839506
Subtract 2430 from 2500 to get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

On to step 16:
405 can be fit into 700 1 times, resulting in a remainder of 295.
The number 1 becomes the next digit in our result. 
Result so far: 54142.68395061
Subtracting 405 from 700 leaves us with 295.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2950, and continue the process.

Our division results in 54142.68395061 with a remaining 2.95e-07.