We're dividing 507009 by 53 
The aim is to understand the frequency of 53 in 507009.

Step 1:
53 goes into 5 0 times with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Take the next digit (0) from the dividend and append it to 5, then repeat: 50 / 53

Advancing to step 2:
When dividing 50 by 53, we get 0 with a remainder of 50.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 50 and we're left with 50.
Grab the next digit (7) from the dividend, add it to 50, then carry on: 507 / 53

Advancing to step 3:
If we divide 507 by 53, we get 9 and a remainder of 30.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
If we subtract 477 from 507, we get 30.
Fetch the next digit (0) from the dividend, attach it to 30 and continue: 300 / 53

On to step 4:
The number 53 fits into 300 5 times, leaving a remainder of 35.
Put 5 as the next digit of the answer. 
Result so far: 95.0
Deduct 265 from 300 and we're left with 35.
Append the next digit (0) from the dividend to 35 and continue with: 350 / 53

Advancing to step 5:
350 divided by 53 is 6 with a remainder of 32.
The number 6 becomes the next digit in our result. 
Result so far: 956.0
The remainder is 32 after subtracting 318 from 350.
Take the next digit (9) from the dividend and append it to 32, then repeat: 329 / 53

Let's proceed to step 6:
329 divided by 53 is 6 with a remainder of 11.
Record the quotient 6 as the next digit in the result. 
Result so far: 9566.0
The remainder is 11 after subtracting 318 from 329.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

On to step 7:
53 goes into 110 2 times with a remainder of 4.
The next digit of our result is 2. 
Result so far: 9566.2
Subtracting 106 from 110 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 8:
40 divided by 53 is 0 with a remainder of 40.
Write down 0 as next digit of the result. 
Result so far: 9566.2
If we subtract 0 from 40, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 9:
If we divide 400 by 53, we get 7 and a remainder of 29.
The number 7 becomes the next digit in our result. 
Result so far: 9566.207
If we take 371 away from 400, we end up with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Moving on to step 10:
If we divide 290 by 53, we get 5 and a remainder of 25.
Write down 5 as next digit of the result. 
Result so far: 9566.2075
The remainder is 25 after subtracting 265 from 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Going ahead to step 11:
If we divide 250 by 53, we get 4 and a remainder of 38.
Use 4 as the next digit of our solution. 
Result so far: 9566.20754
Subtract 212 from 250 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Let's proceed to step 12:
When dividing 380 by 53, we get 7 with a remainder of 9.
Put 7 as the next digit of the answer. 
Result so far: 9566.207547
If we subtract 371 from 380, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Moving on to step 13:
When dividing 90 by 53, we get 1 with a remainder of 37.
The next digit of our result is 1. 
Result so far: 9566.2075471
Deduct 53 from 90 and we're left with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Going ahead to step 14:
If we divide 370 by 53, we get 6 and a remainder of 52.
The number 6 becomes the next digit in our result. 
Result so far: 9566.20754716
The remainder is 52 after subtracting 318 from 370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

The final outcome is 9566.20754716, with a leftover of 5.2e-08.