Let's divide 91424204 by 405
The aim is to understand the frequency of 405 in 91424204.

Let's proceed to step 1:
When dividing 9 by 405, we get 0 with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Take the next digit (1) from the dividend and append it to 9, then repeat: 91 / 405

Let's proceed to step 2:
405 goes into 91 0 times with a remainder of 91.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 91 and we're left with 91.
Append the next digit (4) from the dividend to 91 and continue with: 914 / 405

Advancing to step 3:
405 can be fit into 914 2 times, resulting in a remainder of 104.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we take 810 away from 914, we end up with 104.
Append the next digit (2) from the dividend to 104 and continue with: 1042 / 405

Let's proceed to step 4:
The number 405 fits into 1042 2 times, leaving a remainder of 232.
The next digit of our result is 2. 
Result so far: 22.0
Subtracting 810 from 1042 leaves us with 232.
Take the next digit (4) from the dividend and append it to 232, then repeat: 2324 / 405

Going ahead to step 5:
405 goes into 2324 5 times with a remainder of 299.
Put 5 as the next digit of the answer. 
Result so far: 225.0
The remainder is 299 after subtracting 2025 from 2324.
Take the next digit (2) from the dividend and append it to 299, then repeat: 2992 / 405

Let's proceed to step 6:
2992 divided by 405 is 7 with a remainder of 157.
The number 7 becomes the next digit in our result. 
Result so far: 2257.0
The remainder is 157 after subtracting 2835 from 2992.
Include the next digit (0) from the dividend after 157, then repeat: 1570 / 405

Advancing to step 7:
If we divide 1570 by 405, we get 3 and a remainder of 355.
Record the quotient 3 as the next digit in the result. 
Result so far: 22573.0
If we subtract 1215 from 1570, we get 355.
Append the next digit (4) from the dividend to 355 and continue with: 3554 / 405

Advancing to step 8:
405 goes into 3554 8 times with a remainder of 314.
The next digit of our result is 8. 
Result so far: 225738.0
Subtract 3240 from 3554 to get 314.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3140, and continue the process.

Going ahead to step 9:
3140 divided by 405 is 7 with a remainder of 305.
The next digit of our result is 7. 
Result so far: 225738.7
The remainder is 305 after subtracting 2835 from 3140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3050, and continue the process.

Advancing to step 10:
405 can be fit into 3050 7 times, resulting in a remainder of 215.
The number 7 becomes the next digit in our result. 
Result so far: 225738.77
Deduct 2835 from 3050 and we're left with 215.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2150, and continue the process.

Our division results in 225738.77 with a remaining 0.215.