Let's divide 64083893 by 405
The aim is to understand the frequency of 405 in 64083893.

Advancing to step 1:
If we divide 6 by 405, we get 0 and a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Append the next digit (4) from the dividend to 6 and continue with: 64 / 405

On to step 2:
64 divided by 405 is 0 with a remainder of 64.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 64, we end up with 64.
Take the next digit (0) from the dividend and append it to 64, then repeat: 640 / 405

Advancing to step 3:
640 divided by 405 is 1 with a remainder of 235.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 405 from 640 and we're left with 235.
Include the next digit (8) from the dividend after 235, then repeat: 2358 / 405

Moving on to step 4:
405 can be fit into 2358 5 times, resulting in a remainder of 333.
Put 5 as the next digit of the answer. 
Result so far: 15.0
If we subtract 2025 from 2358, we get 333.
Bring next digit (3) of the dividend behind the 333 and repeat the process: 3333 / 405

Moving on to step 5:
If we divide 3333 by 405, we get 8 and a remainder of 93.
The next digit of our result is 8. 
Result so far: 158.0
Subtract 3240 from 3333 to get 93.
Grab the next digit (8) from the dividend, add it to 93, then carry on: 938 / 405

Step 6:
405 can be fit into 938 2 times, resulting in a remainder of 128.
Use 2 as the next digit of our solution. 
Result so far: 1582.0
Subtract 810 from 938 to get 128.
Grab the next digit (9) from the dividend, add it to 128, then carry on: 1289 / 405

Let's proceed to step 7:
405 goes into 1289 3 times with a remainder of 74.
Use 3 as the next digit of our solution. 
Result so far: 15823.0
If we take 1215 away from 1289, we end up with 74.
Include the next digit (3) from the dividend after 74, then repeat: 743 / 405

Advancing to step 8:
743 divided by 405 is 1 with a remainder of 338.
Record the quotient 1 as the next digit in the result. 
Result so far: 158231.0
Deduct 405 from 743 and we're left with 338.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3380, and continue the process.

Going ahead to step 9:
When dividing 3380 by 405, we get 8 with a remainder of 140.
Record the quotient 8 as the next digit in the result. 
Result so far: 158231.8
Subtract 3240 from 3380 to get 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Advancing to step 10:
When dividing 1400 by 405, we get 3 with a remainder of 185.
The next digit of our result is 3. 
Result so far: 158231.83
Deduct 1215 from 1400 and we're left with 185.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1850, and continue the process.

Step 11:
1850 divided by 405 is 4 with a remainder of 230.
The number 4 becomes the next digit in our result. 
Result so far: 158231.834
If we take 1620 away from 1850, we end up with 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Going ahead to step 12:
2300 divided by 405 is 5 with a remainder of 275.
Use 5 as the next digit of our solution. 
Result so far: 158231.8345
Subtracting 2025 from 2300 leaves us with 275.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2750, and continue the process.

Going ahead to step 13:
When dividing 2750 by 405, we get 6 with a remainder of 320.
Write down 6 as next digit of the result. 
Result so far: 158231.83456
Subtracting 2430 from 2750 leaves us with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Let's proceed to step 14:
3200 divided by 405 is 7 with a remainder of 365.
Write down 7 as next digit of the result. 
Result so far: 158231.834567
Subtract 2835 from 3200 to get 365.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3650, and continue the process.

Let's proceed to step 15:
The number 405 fits into 3650 9 times, leaving a remainder of 5.
The number 9 becomes the next digit in our result. 
Result so far: 158231.8345679
Subtracting 3645 from 3650 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 16:
The number 405 fits into 50 0 times, leaving a remainder of 50.
Put 0 as the next digit of the answer. 
Result so far: 158231.8345679
The remainder is 50 after subtracting 0 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

The quotient of the division is 158231.8345679, and the remainder is 5e-08.