We look at the division of 780408 by 50 
The aim is to understand the frequency of 50 in 780408.

Going ahead to step 1:
The number 50 fits into 7 0 times, leaving a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Take the next digit (8) from the dividend and append it to 7, then repeat: 78 / 50

Step 2:
50 can be fit into 78 1 times, resulting in a remainder of 28.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 50 from 78 leaves us with 28.
Take the next digit (0) from the dividend and append it to 28, then repeat: 280 / 50

Going ahead to step 3:
280 divided by 50 is 5 with a remainder of 30.
The number 5 becomes the next digit in our result. 
Result so far: 15.0
Subtract 250 from 280 to get 30.
Take the next digit (4) from the dividend and append it to 30, then repeat: 304 / 50

Moving on to step 4:
The number 50 fits into 304 6 times, leaving a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 156.0
If we take 300 away from 304, we end up with 4.
Bring next digit (0) of the dividend behind the 4 and repeat the process: 40 / 50

Let's proceed to step 5:
40 divided by 50 is 0 with a remainder of 40.
The next digit of our result is 0. 
Result so far: 1560.0
The remainder is 40 after subtracting 0 from 40.
Take the next digit (8) from the dividend and append it to 40, then repeat: 408 / 50

Moving on to step 6:
50 can be fit into 408 8 times, resulting in a remainder of 8.
Write down 8 as next digit of the result. 
Result so far: 15608.0
Subtracting 400 from 408 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 7:
The number 50 fits into 80 1 times, leaving a remainder of 30.
Record the quotient 1 as the next digit in the result. 
Result so far: 15608.1
Deduct 50 from 80 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 8:
If we divide 300 by 50, we get 6 and a remainder of 0.
Use 6 as the next digit of our solution. 
Result so far: 15608.16
If we take 300 away from 300, 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.

Step 9:
When dividing 0 by 50, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 15608.16
The remainder is 0 after subtracting 0 from 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 10:
When dividing 0 by 50, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 15608.16
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.

Our division results in 15608.16 with a remaining 0.0.