We look at the division of 554970 by 50 
The aim is to understand the frequency of 50 in 554970.

Advancing to step 1:
The number 50 fits into 5 0 times, leaving a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Fetch the next digit (5) from the dividend, attach it to 5 and continue: 55 / 50

Step 2:
The number 50 fits into 55 1 times, leaving a remainder of 5.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 50 from 55, we get 5.
Take the next digit (4) from the dividend and append it to 5, then repeat: 54 / 50

Moving on to step 3:
The number 50 fits into 54 1 times, leaving a remainder of 4.
Write down 1 as next digit of the result. 
Result so far: 11.0
If we subtract 50 from 54, we get 4.
Fetch the next digit (9) from the dividend, attach it to 4 and continue: 49 / 50

Advancing to step 4:
49 divided by 50 is 0 with a remainder of 49.
The number 0 becomes the next digit in our result. 
Result so far: 110.0
If we subtract 0 from 49, we get 49.
Append the next digit (7) from the dividend to 49 and continue with: 497 / 50

Step 5:
497 divided by 50 is 9 with a remainder of 47.
Use 9 as the next digit of our solution. 
Result so far: 1109.0
Subtracting 450 from 497 leaves us with 47.
Grab the next digit (0) from the dividend, add it to 47, then carry on: 470 / 50

Let's proceed to step 6:
470 divided by 50 is 9 with a remainder of 20.
Put 9 as the next digit of the answer. 
Result so far: 11099.0
Deduct 450 from 470 and we're left 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.

Advancing to step 7:
If we divide 200 by 50, we get 4 and a remainder of 0.
Use 4 as the next digit of our solution. 
Result so far: 11099.4
If we subtract 200 from 200, 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.

Let's proceed to step 8:
If we divide 0 by 50, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 11099.4
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.

Advancing to step 9:
The number 50 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 11099.4
Subtracting 0 from 0 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.

Our division results in 11099.4 with a remaining 0.0.