We look at the division of 420792 by 49 
The aim is to understand the frequency of 49 in 420792.

Let's proceed to step 1:
When dividing 4 by 49, we get 0 with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Take the next digit (2) from the dividend and append it to 4, then repeat: 42 / 49

Advancing to step 2:
When dividing 42 by 49, we get 0 with a remainder of 42.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 42, we get 42.
Append the next digit (0) from the dividend to 42 and continue with: 420 / 49

On to step 3:
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: 8.0
Subtracting 392 from 420 leaves us with 28.
Append the next digit (7) from the dividend to 28 and continue with: 287 / 49

Moving on to step 4:
When dividing 287 by 49, we get 5 with a remainder of 42.
Use 5 as the next digit of our solution. 
Result so far: 85.0
If we subtract 245 from 287, we get 42.
Append the next digit (9) from the dividend to 42 and continue with: 429 / 49

Moving on to step 5:
49 goes into 429 8 times with a remainder of 37.
The next digit of our result is 8. 
Result so far: 858.0
If we take 392 away from 429, we end up with 37.
Include the next digit (2) from the dividend after 37, then repeat: 372 / 49

Going ahead to step 6:
372 divided by 49 is 7 with a remainder of 29.
The number 7 becomes the next digit in our result. 
Result so far: 8587.0
Subtract 343 from 372 to get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Step 7:
290 divided by 49 is 5 with a remainder of 45.
The number 5 becomes the next digit in our result. 
Result so far: 8587.5
Subtract 245 from 290 to get 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Step 8:
49 can be fit into 450 9 times, resulting in a remainder of 9.
Put 9 as the next digit of the answer. 
Result so far: 8587.59
The remainder is 9 after subtracting 441 from 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Let's proceed to step 9:
49 goes into 90 1 times with a remainder of 41.
Put 1 as the next digit of the answer. 
Result so far: 8587.591
Deduct 49 from 90 and we're left with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Advancing to step 10:
If we divide 410 by 49, we get 8 and a remainder of 18.
Record the quotient 8 as the next digit in the result. 
Result so far: 8587.5918
If we subtract 392 from 410, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 11:
180 divided by 49 is 3 with a remainder of 33.
The next digit of our result is 3. 
Result so far: 8587.59183
If we take 147 away from 180, we end up with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Moving on to step 12:
49 can be fit into 330 6 times, resulting in a remainder of 36.
Use 6 as the next digit of our solution. 
Result so far: 8587.591836
If we take 294 away from 330, we end up with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Advancing to step 13:
If we divide 360 by 49, we get 7 and a remainder of 17.
Record the quotient 7 as the next digit in the result. 
Result so far: 8587.5918367
If we take 343 away from 360, we end up with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Moving on to step 14:
49 goes into 170 3 times with a remainder of 23.
The number 3 becomes the next digit in our result. 
Result so far: 8587.59183673
The remainder is 23 after subtracting 147 from 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Our division results in 8587.59183673 with a remaining 2.3e-08.