405020 divided by 5 
The aim is to understand the frequency of 5 in 405020.

Going ahead to step 1:
When dividing 4 by 5, we get 0 with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Include the next digit (0) from the dividend after 4, then repeat: 40 / 5

On to step 2:
If we divide 40 by 5, we get 8 and a remainder of 0.
The next digit of our result is 8. 
Result so far: 8.0
Subtracting 40 from 40 leaves us with 0.
Grab the next digit (5) from the dividend, add it to 0, then carry on: 5 / 5

Let's proceed to step 3:
5 goes into 5 1 times with a remainder of 0.
The number 1 becomes the next digit in our result. 
Result so far: 81.0
Subtracting 5 from 5 leaves us with 0.
Take the next digit (0) from the dividend and append it to 0, then repeat: 0 / 5

Let's proceed to step 4:
The number 5 fits into 0 0 times, leaving a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 810.0
Subtract 0 from 0 to get 0.
Grab the next digit (2) from the dividend, add it to 0, then carry on: 2 / 5

On to step 5:
If we divide 2 by 5, we get 0 and a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 8100.0
The remainder is 2 after subtracting 0 from 2.
Grab the next digit (0) from the dividend, add it to 2, then carry on: 20 / 5

Let's proceed to step 6:
When dividing 20 by 5, we get 4 with a remainder of 0.
Write down 4 as next digit of the result. 
Result so far: 81004.0
If we subtract 20 from 20, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 7:
The number 5 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 81004.0
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 8:
The number 5 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 81004.0
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 81004.0, and the remainder is 0.0.