We look at the division of 223923 by 49 
The aim is to understand the frequency of 49 in 223923.

Advancing to step 1:
The number 49 fits into 2 0 times, leaving a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Include the next digit (2) from the dividend after 2, then repeat: 22 / 49

Advancing to step 2:
22 divided by 49 is 0 with a remainder of 22.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 22, we end up with 22.
Bring next digit (3) of the dividend behind the 22 and repeat the process: 223 / 49

Step 3:
The number 49 fits into 223 4 times, leaving a remainder of 27.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Subtracting 196 from 223 leaves us with 27.
Bring next digit (9) of the dividend behind the 27 and repeat the process: 279 / 49

Let's proceed to step 4:
49 can be fit into 279 5 times, resulting in a remainder of 34.
Use 5 as the next digit of our solution. 
Result so far: 45.0
Subtract 245 from 279 to get 34.
Append the next digit (2) from the dividend to 34 and continue with: 342 / 49

Going ahead to step 5:
342 divided by 49 is 6 with a remainder of 48.
The next digit of our result is 6. 
Result so far: 456.0
If we take 294 away from 342, we end up with 48.
Grab the next digit (3) from the dividend, add it to 48, then carry on: 483 / 49

Step 6:
If we divide 483 by 49, we get 9 and a remainder of 42.
Write down 9 as next digit of the result. 
Result so far: 4569.0
Subtracting 441 from 483 leaves us with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Let's proceed to step 7:
If we divide 420 by 49, we get 8 and a remainder of 28.
Write down 8 as next digit of the result. 
Result so far: 4569.8
Subtract 392 from 420 to get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

On to step 8:
When dividing 280 by 49, we get 5 with a remainder of 35.
Put 5 as the next digit of the answer. 
Result so far: 4569.85
If we take 245 away from 280, we end up with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Let's proceed to step 9:
350 divided by 49 is 7 with a remainder of 7.
The next digit of our result is 7. 
Result so far: 4569.857
Deduct 343 from 350 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

On to step 10:
If we divide 70 by 49, we get 1 and a remainder of 21.
The next digit of our result is 1. 
Result so far: 4569.8571
The remainder is 21 after subtracting 49 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Going ahead to step 11:
49 goes into 210 4 times with a remainder of 14.
The next digit of our result is 4. 
Result so far: 4569.85714
Deduct 196 from 210 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 12:
49 can be fit into 140 2 times, resulting in a remainder of 42.
The number 2 becomes the next digit in our result. 
Result so far: 4569.857142
The remainder is 42 after subtracting 98 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Moving on to step 13:
49 can be fit into 420 8 times, resulting in a remainder of 28.
The next digit of our result is 8. 
Result so far: 4569.8571428
Deduct 392 from 420 and we're left with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Advancing to step 14:
49 goes into 280 5 times with a remainder of 35.
Write down 5 as next digit of the result. 
Result so far: 4569.85714285
Deduct 245 from 280 and we're left with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

After the division, we end up with 4569.85714285 and a remainder of 3.5e-08.