19284121 divided by 405 
The aim is to understand the frequency of 405 in 19284121.

Moving on to step 1:
When dividing 1 by 405, we get 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Bring next digit (9) of the dividend behind the 1 and repeat the process: 19 / 405

Advancing to step 2:
405 can be fit into 19 0 times, resulting in a remainder of 19.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 19 to get 19.
Bring next digit (2) of the dividend behind the 19 and repeat the process: 192 / 405

Moving on to step 3:
The number 405 fits into 192 0 times, leaving a remainder of 192.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 192 and we're left with 192.
Bring next digit (8) of the dividend behind the 192 and repeat the process: 1928 / 405

Advancing to step 4:
When dividing 1928 by 405, we get 4 with a remainder of 308.
Write down 4 as next digit of the result. 
Result so far: 4.0
The remainder is 308 after subtracting 1620 from 1928.
Bring next digit (4) of the dividend behind the 308 and repeat the process: 3084 / 405

Advancing to step 5:
405 can be fit into 3084 7 times, resulting in a remainder of 249.
The next digit of our result is 7. 
Result so far: 47.0
Subtracting 2835 from 3084 leaves us with 249.
Take the next digit (1) from the dividend and append it to 249, then repeat: 2491 / 405

Advancing to step 6:
When dividing 2491 by 405, we get 6 with a remainder of 61.
Record the quotient 6 as the next digit in the result. 
Result so far: 476.0
Deduct 2430 from 2491 and we're left with 61.
Bring next digit (2) of the dividend behind the 61 and repeat the process: 612 / 405

Let's proceed to step 7:
When dividing 612 by 405, we get 1 with a remainder of 207.
Record the quotient 1 as the next digit in the result. 
Result so far: 4761.0
Subtract 405 from 612 to get 207.
Append the next digit (1) from the dividend to 207 and continue with: 2071 / 405

Advancing to step 8:
405 can be fit into 2071 5 times, resulting in a remainder of 46.
Record the quotient 5 as the next digit in the result. 
Result so far: 47615.0
Subtracting 2025 from 2071 leaves us with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Moving on to step 9:
If we divide 460 by 405, we get 1 and a remainder of 55.
The number 1 becomes the next digit in our result. 
Result so far: 47615.1
Subtracting 405 from 460 leaves us with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Let's proceed to step 10:
If we divide 550 by 405, we get 1 and a remainder of 145.
The number 1 becomes the next digit in our result. 
Result so far: 47615.11
The remainder is 145 after subtracting 405 from 550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1450, and continue the process.

The final result is 47615.11 with a remainder of 0.145.