390757 ÷ 53 
The aim is to understand the frequency of 53 in 390757.

Moving on to step 1:
The number 53 fits into 3 0 times, leaving a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 53

On to step 2:
The number 53 fits into 39 0 times, leaving a remainder of 39.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 39, we get 39.
Append the next digit (0) from the dividend to 39 and continue with: 390 / 53

Going ahead to step 3:
53 can be fit into 390 7 times, resulting in a remainder of 19.
Use 7 as the next digit of our solution. 
Result so far: 7.0
Subtract 371 from 390 to get 19.
Grab the next digit (7) from the dividend, add it to 19, then carry on: 197 / 53

Advancing to step 4:
53 goes into 197 3 times with a remainder of 38.
The next digit of our result is 3. 
Result so far: 73.0
If we subtract 159 from 197, we get 38.
Append the next digit (5) from the dividend to 38 and continue with: 385 / 53

On to step 5:
385 divided by 53 is 7 with a remainder of 14.
Record the quotient 7 as the next digit in the result. 
Result so far: 737.0
Deduct 371 from 385 and we're left with 14.
Grab the next digit (7) from the dividend, add it to 14, then carry on: 147 / 53

On to step 6:
The number 53 fits into 147 2 times, leaving a remainder of 41.
The next digit of our result is 2. 
Result so far: 7372.0
If we take 106 away from 147, we end up 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.

Step 7:
If we divide 410 by 53, we get 7 and a remainder of 39.
The number 7 becomes the next digit in our result. 
Result so far: 7372.7
Subtracting 371 from 410 leaves us with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Let's proceed to step 8:
390 divided by 53 is 7 with a remainder of 19.
The next digit of our result is 7. 
Result so far: 7372.77
Deduct 371 from 390 and we're left with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

The final result is 7372.77 with a remainder of 0.019.