53991 divided by 50 
The aim is to understand the frequency of 50 in 53991.

Going ahead to step 1:
50 can be fit into 5 0 times, resulting in a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Bring next digit (3) of the dividend behind the 5 and repeat the process: 53 / 50

Moving on to step 2:
50 can be fit into 53 1 times, resulting in a remainder of 3.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 50 from 53 leaves us with 3.
Grab the next digit (9) from the dividend, add it to 3, then carry on: 39 / 50

Moving on to step 3:
50 can be fit into 39 0 times, resulting in a remainder of 39.
Put 0 as the next digit of the answer. 
Result so far: 10.0
The remainder is 39 after subtracting 0 from 39.
Take the next digit (9) from the dividend and append it to 39, then repeat: 399 / 50

Advancing to step 4:
399 divided by 50 is 7 with a remainder of 49.
Record the quotient 7 as the next digit in the result. 
Result so far: 107.0
If we subtract 350 from 399, we get 49.
Include the next digit (1) from the dividend after 49, then repeat: 491 / 50

On to step 5:
50 can be fit into 491 9 times, resulting in a remainder of 41.
The number 9 becomes the next digit in our result. 
Result so far: 1079.0
Subtracting 450 from 491 leaves us 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.

Going ahead to step 6:
When dividing 410 by 50, we get 8 with a remainder of 10.
Put 8 as the next digit of the answer. 
Result so far: 1079.8
If we subtract 400 from 410, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 7:
If we divide 100 by 50, we get 2 and a remainder of 0.
The number 2 becomes the next digit in our result. 
Result so far: 1079.82
Subtract 100 from 100 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 8:
If we divide 0 by 50, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 1079.82
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.

Going ahead to 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: 1079.82
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.

The final result is 1079.82 with a remainder of 0.0.