99138406 ÷ 5 
The aim is to understand the frequency of 5 in 99138406.

Step 1:
9 divided by 5 is 1 with a remainder of 4.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 4 after subtracting 5 from 9.
Grab the next digit (9) from the dividend, add it to 4, then carry on: 49 / 5

Step 2:
When dividing 49 by 5, we get 9 with a remainder of 4.
The next digit of our result is 9. 
Result so far: 19.0
The remainder is 4 after subtracting 45 from 49.
Take the next digit (1) from the dividend and append it to 4, then repeat: 41 / 5

Going ahead to step 3:
5 can be fit into 41 8 times, resulting in a remainder of 1.
The number 8 becomes the next digit in our result. 
Result so far: 198.0
Subtracting 40 from 41 leaves us with 1.
Bring next digit (3) of the dividend behind the 1 and repeat the process: 13 / 5

Moving on to step 4:
If we divide 13 by 5, we get 2 and a remainder of 3.
Record the quotient 2 as the next digit in the result. 
Result so far: 1982.0
If we take 10 away from 13, we end up with 3.
Grab the next digit (8) from the dividend, add it to 3, then carry on: 38 / 5

Going ahead to step 5:
5 goes into 38 7 times with a remainder of 3.
Write down 7 as next digit of the result. 
Result so far: 19827.0
The remainder is 3 after subtracting 35 from 38.
Bring next digit (4) of the dividend behind the 3 and repeat the process: 34 / 5

Going ahead to step 6:
If we divide 34 by 5, we get 6 and a remainder of 4.
Put 6 as the next digit of the answer. 
Result so far: 198276.0
Subtracting 30 from 34 leaves us with 4.
Include the next digit (0) from the dividend after 4, then repeat: 40 / 5

Let's proceed to step 7:
When dividing 40 by 5, we get 8 with a remainder of 0.
Put 8 as the next digit of the answer. 
Result so far: 1982768.0
If we take 40 away from 40, we end up with 0.
Include the next digit (6) from the dividend after 0, then repeat: 6 / 5

Advancing to step 8:
5 can be fit into 6 1 times, resulting in a remainder of 1.
The number 1 becomes the next digit in our result. 
Result so far: 19827681.0
If we subtract 5 from 6, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 9:
10 divided by 5 is 2 with a remainder of 0.
Use 2 as the next digit of our solution. 
Result so far: 19827681.2
Deduct 10 from 10 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.

Going ahead to step 10:
0 divided by 5 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 19827681.2
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.

Moving on to step 11:
When dividing 0 by 5, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 19827681.2
Subtract 0 from 0 to 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.

In conclusion, the division gives 19827681.2 with a balance of 0.0.