We're dividing 80847812 by 405 
The aim is to understand the frequency of 405 in 80847812.

Let's proceed to step 1:
When dividing 8 by 405, we get 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Include the next digit (0) from the dividend after 8, then repeat: 80 / 405

Step 2:
405 goes into 80 0 times with a remainder of 80.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 80 and we're left with 80.
Append the next digit (8) from the dividend to 80 and continue with: 808 / 405

Let's proceed to step 3:
If we divide 808 by 405, we get 1 and a remainder of 403.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 405 from 808, we get 403.
Fetch the next digit (4) from the dividend, attach it to 403 and continue: 4034 / 405

Advancing to step 4:
4034 divided by 405 is 9 with a remainder of 389.
Write down 9 as next digit of the result. 
Result so far: 19.0
Subtract 3645 from 4034 to get 389.
Fetch the next digit (7) from the dividend, attach it to 389 and continue: 3897 / 405

Step 5:
405 can be fit into 3897 9 times, resulting in a remainder of 252.
Record the quotient 9 as the next digit in the result. 
Result so far: 199.0
Deduct 3645 from 3897 and we're left with 252.
Grab the next digit (8) from the dividend, add it to 252, then carry on: 2528 / 405

Step 6:
If we divide 2528 by 405, we get 6 and a remainder of 98.
The next digit of our result is 6. 
Result so far: 1996.0
Deduct 2430 from 2528 and we're left with 98.
Include the next digit (1) from the dividend after 98, then repeat: 981 / 405

Step 7:
981 divided by 405 is 2 with a remainder of 171.
Write down 2 as next digit of the result. 
Result so far: 19962.0
If we subtract 810 from 981, we get 171.
Grab the next digit (2) from the dividend, add it to 171, then carry on: 1712 / 405

Step 8:
405 goes into 1712 4 times with a remainder of 92.
The number 4 becomes the next digit in our result. 
Result so far: 199624.0
If we take 1620 away from 1712, we end up with 92.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

Step 9:
405 can be fit into 920 2 times, resulting in a remainder of 110.
Use 2 as the next digit of our solution. 
Result so far: 199624.2
If we subtract 810 from 920, we get 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Moving on to step 10:
405 goes into 1100 2 times with a remainder of 290.
Write down 2 as next digit of the result. 
Result so far: 199624.22
The remainder is 290 after subtracting 810 from 1100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

The final result is 199624.22 with a remainder of 0.29.