We divide 288399 by 5
The aim is to understand the frequency of 5 in 288399.

Going ahead to step 1:
2 divided by 5 is 0 with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Bring next digit (8) of the dividend behind the 2 and repeat the process: 28 / 5

Moving on to step 2:
If we divide 28 by 5, we get 5 and a remainder of 3.
Write down 5 as next digit of the result. 
Result so far: 5.0
If we take 25 away from 28, we end up with 3.
Bring next digit (8) of the dividend behind the 3 and repeat the process: 38 / 5

Let's proceed to step 3:
If we divide 38 by 5, we get 7 and a remainder of 3.
Record the quotient 7 as the next digit in the result. 
Result so far: 57.0
Subtract 35 from 38 to get 3.
Append the next digit (3) from the dividend to 3 and continue with: 33 / 5

Moving on to step 4:
When dividing 33 by 5, we get 6 with a remainder of 3.
Record the quotient 6 as the next digit in the result. 
Result so far: 576.0
Subtract 30 from 33 to get 3.
Grab the next digit (9) from the dividend, add it to 3, then carry on: 39 / 5

Advancing to step 5:
If we divide 39 by 5, we get 7 and a remainder of 4.
Put 7 as the next digit of the answer. 
Result so far: 5767.0
Subtracting 35 from 39 leaves us with 4.
Append the next digit (9) from the dividend to 4 and continue with: 49 / 5

Going ahead to step 6:
If we divide 49 by 5, we get 9 and a remainder of 4.
The next digit of our result is 9. 
Result so far: 57679.0
Subtracting 45 from 49 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 7:
If we divide 40 by 5, we get 8 and a remainder of 0.
Put 8 as the next digit of the answer. 
Result so far: 57679.8
The remainder is 0 after subtracting 40 from 40.
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:
5 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 57679.8
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.

Let's proceed to step 9:
If we divide 0 by 5, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 57679.8
If we subtract 0 from 0, 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.

Our division results in 57679.8 with a remaining 0.0.