We look at the division of 912873 by 50 
The aim is to understand the frequency of 50 in 912873.

Advancing to step 1:
If we divide 9 by 50, we get 0 and a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Fetch the next digit (1) from the dividend, attach it to 9 and continue: 91 / 50

On to step 2:
91 divided by 50 is 1 with a remainder of 41.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 50 away from 91, we end up with 41.
Take the next digit (2) from the dividend and append it to 41, then repeat: 412 / 50

Step 3:
The number 50 fits into 412 8 times, leaving a remainder of 12.
Write down 8 as next digit of the result. 
Result so far: 18.0
Deduct 400 from 412 and we're left with 12.
Fetch the next digit (8) from the dividend, attach it to 12 and continue: 128 / 50

Let's proceed to step 4:
When dividing 128 by 50, we get 2 with a remainder of 28.
Write down 2 as next digit of the result. 
Result so far: 182.0
If we take 100 away from 128, we end up with 28.
Append the next digit (7) from the dividend to 28 and continue with: 287 / 50

On to step 5:
The number 50 fits into 287 5 times, leaving a remainder of 37.
Put 5 as the next digit of the answer. 
Result so far: 1825.0
If we take 250 away from 287, we end up with 37.
Fetch the next digit (3) from the dividend, attach it to 37 and continue: 373 / 50

On to step 6:
When dividing 373 by 50, we get 7 with a remainder of 23.
Write down 7 as next digit of the result. 
Result so far: 18257.0
Deduct 350 from 373 and we're left with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Step 7:
The number 50 fits into 230 4 times, leaving a remainder of 30.
The number 4 becomes the next digit in our result. 
Result so far: 18257.4
If we subtract 200 from 230, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 8:
50 can be fit into 300 6 times, resulting in a remainder of 0.
Put 6 as the next digit of the answer. 
Result so far: 18257.46
Subtract 300 from 300 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.

Advancing to step 9:
If we divide 0 by 50, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 18257.46
If we take 0 away from 0, we end up 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:
50 can be fit into 0 0 times, resulting in a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 18257.46
If we subtract 0 from 0, we 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.

The final outcome is 18257.46, with a leftover of 0.0.