We're dividing 505408 by 53 
The aim is to understand the frequency of 53 in 505408.

Advancing to step 1:
53 goes into 5 0 times with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Bring next digit (0) of the dividend behind the 5 and repeat the process: 50 / 53

On to step 2:
If we divide 50 by 53, we get 0 and a remainder of 50.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 50 after subtracting 0 from 50.
Append the next digit (5) from the dividend to 50 and continue with: 505 / 53

On to step 3:
The number 53 fits into 505 9 times, leaving a remainder of 28.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
Subtract 477 from 505 to get 28.
Bring next digit (4) of the dividend behind the 28 and repeat the process: 284 / 53

Let's proceed to step 4:
If we divide 284 by 53, we get 5 and a remainder of 19.
Put 5 as the next digit of the answer. 
Result so far: 95.0
If we subtract 265 from 284, we get 19.
Grab the next digit (0) from the dividend, add it to 19, then carry on: 190 / 53

Moving on to step 5:
The number 53 fits into 190 3 times, leaving a remainder of 31.
The number 3 becomes the next digit in our result. 
Result so far: 953.0
The remainder is 31 after subtracting 159 from 190.
Grab the next digit (8) from the dividend, add it to 31, then carry on: 318 / 53

Step 6:
When dividing 318 by 53, we get 6 with a remainder of 0.
The number 6 becomes the next digit in our result. 
Result so far: 9536.0
If we take 318 away from 318, 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.

Let's proceed to step 7:
If we divide 0 by 53, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 9536.0
Deduct 0 from 0 and we're left 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 8:
If we divide 0 by 53, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 9536.0
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.

After the division, we end up with 9536.0 and a remainder of 0.0.