393872 ÷ 50 
The aim is to understand the frequency of 50 in 393872.

Moving on to step 1:
50 can be fit into 3 0 times, resulting in a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 50

Let's proceed to step 2:
50 goes into 39 0 times with a remainder of 39.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 39, we end up with 39.
Grab the next digit (3) from the dividend, add it to 39, then carry on: 393 / 50

Going ahead to step 3:
50 goes into 393 7 times with a remainder of 43.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
Deduct 350 from 393 and we're left with 43.
Append the next digit (8) from the dividend to 43 and continue with: 438 / 50

Moving on to step 4:
438 divided by 50 is 8 with a remainder of 38.
Write down 8 as next digit of the result. 
Result so far: 78.0
If we take 400 away from 438, we end up with 38.
Bring next digit (7) of the dividend behind the 38 and repeat the process: 387 / 50

Advancing to step 5:
50 can be fit into 387 7 times, resulting in a remainder of 37.
The next digit of our result is 7. 
Result so far: 787.0
Deduct 350 from 387 and we're left with 37.
Fetch the next digit (2) from the dividend, attach it to 37 and continue: 372 / 50

Moving on to step 6:
If we divide 372 by 50, we get 7 and a remainder of 22.
Write down 7 as next digit of the result. 
Result so far: 7877.0
If we take 350 away from 372, we end up with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Step 7:
50 can be fit into 220 4 times, resulting in a remainder of 20.
The number 4 becomes the next digit in our result. 
Result so far: 7877.4
If we take 200 away from 220, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 8:
When dividing 200 by 50, we get 4 with a remainder of 0.
The next digit of our result is 4. 
Result so far: 7877.44
Subtracting 200 from 200 leaves us 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.

The final outcome is 7877.44, with a leftover of 0.0.