50438 divided by 99 
The aim is to understand the frequency of 99 in 50438.

On to step 1:
If we divide 5 by 99, we get 0 and a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Append the next digit (0) from the dividend to 5 and continue with: 50 / 99

Let's proceed to step 2:
99 goes into 50 0 times with a remainder of 50.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 50 and we're left with 50.
Grab the next digit (4) from the dividend, add it to 50, then carry on: 504 / 99

Step 3:
The number 99 fits into 504 5 times, leaving a remainder of 9.
Write down 5 as next digit of the result. 
Result so far: 5.0
Deduct 495 from 504 and we're left with 9.
Bring next digit (3) of the dividend behind the 9 and repeat the process: 93 / 99

Moving on to step 4:
If we divide 93 by 99, we get 0 and a remainder of 93.
Record the quotient 0 as the next digit in the result. 
Result so far: 50.0
If we subtract 0 from 93, we get 93.
Fetch the next digit (8) from the dividend, attach it to 93 and continue: 938 / 99

Step 5:
The number 99 fits into 938 9 times, leaving a remainder of 47.
Record the quotient 9 as the next digit in the result. 
Result so far: 509.0
If we subtract 891 from 938, we get 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Advancing to step 6:
The number 99 fits into 470 4 times, leaving a remainder of 74.
Record the quotient 4 as the next digit in the result. 
Result so far: 509.4
Deduct 396 from 470 and we're left with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Going ahead to step 7:
99 goes into 740 7 times with a remainder of 47.
Record the quotient 7 as the next digit in the result. 
Result so far: 509.47
Subtract 693 from 740 to get 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Moving on to step 8:
When dividing 470 by 99, we get 4 with a remainder of 74.
The next digit of our result is 4. 
Result so far: 509.474
If we subtract 396 from 470, we get 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Advancing to step 9:
99 goes into 740 7 times with a remainder of 47.
Record the quotient 7 as the next digit in the result. 
Result so far: 509.4747
Subtracting 693 from 740 leaves us with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Let's proceed to step 10:
99 can be fit into 470 4 times, resulting in a remainder of 74.
Write down 4 as next digit of the result. 
Result so far: 509.47474
Deduct 396 from 470 and we're left with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Let's proceed to step 11:
The number 99 fits into 740 7 times, leaving a remainder of 47.
Put 7 as the next digit of the answer. 
Result so far: 509.474747
Subtracting 693 from 740 leaves us with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Step 12:
The number 99 fits into 470 4 times, leaving a remainder of 74.
Use 4 as the next digit of our solution. 
Result so far: 509.4747474
Subtract 396 from 470 to get 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Advancing to step 13:
The number 99 fits into 740 7 times, leaving a remainder of 47.
The next digit of our result is 7. 
Result so far: 509.47474747
Subtracting 693 from 740 leaves us with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

After the division, we end up with 509.47474747 and a remainder of 4.7e-08.