We look at the division of 53372784 by 209 
The aim is to understand the frequency of 209 in 53372784.

Advancing to step 1:
209 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 take 0 away from 5, we end up with 5.
Take the next digit (3) from the dividend and append it to 5, then repeat: 53 / 209

Let's proceed to step 2:
209 can be fit into 53 0 times, resulting in a remainder of 53.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 53, we end up with 53.
Bring next digit (3) of the dividend behind the 53 and repeat the process: 533 / 209

Step 3:
209 can be fit into 533 2 times, resulting in a remainder of 115.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtract 418 from 533 to get 115.
Fetch the next digit (7) from the dividend, attach it to 115 and continue: 1157 / 209

Moving on to step 4:
209 goes into 1157 5 times with a remainder of 112.
The number 5 becomes the next digit in our result. 
Result so far: 25.0
The remainder is 112 after subtracting 1045 from 1157.
Fetch the next digit (2) from the dividend, attach it to 112 and continue: 1122 / 209

Let's proceed to step 5:
If we divide 1122 by 209, we get 5 and a remainder of 77.
Write down 5 as next digit of the result. 
Result so far: 255.0
If we subtract 1045 from 1122, we get 77.
Bring next digit (7) of the dividend behind the 77 and repeat the process: 777 / 209

Advancing to step 6:
If we divide 777 by 209, we get 3 and a remainder of 150.
Write down 3 as next digit of the result. 
Result so far: 2553.0
If we take 627 away from 777, we end up with 150.
Append the next digit (8) from the dividend to 150 and continue with: 1508 / 209

On to step 7:
209 can be fit into 1508 7 times, resulting in a remainder of 45.
Put 7 as the next digit of the answer. 
Result so far: 25537.0
Subtract 1463 from 1508 to get 45.
Fetch the next digit (4) from the dividend, attach it to 45 and continue: 454 / 209

On to step 8:
209 can be fit into 454 2 times, resulting in a remainder of 36.
The next digit of our result is 2. 
Result so far: 255372.0
Subtracting 418 from 454 leaves us with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Moving on to step 9:
209 can be fit into 360 1 times, resulting in a remainder of 151.
The next digit of our result is 1. 
Result so far: 255372.1
Deduct 209 from 360 and we're left with 151.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1510, and continue the process.

Let's proceed to step 10:
209 can be fit into 1510 7 times, resulting in a remainder of 47.
Use 7 as the next digit of our solution. 
Result so far: 255372.17
Subtracting 1463 from 1510 leaves us with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Let's proceed to step 11:
When dividing 470 by 209, we get 2 with a remainder of 52.
The number 2 becomes the next digit in our result. 
Result so far: 255372.172
Subtracting 418 from 470 leaves us with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

On to step 12:
209 can be fit into 520 2 times, resulting in a remainder of 102.
The number 2 becomes the next digit in our result. 
Result so far: 255372.1722
Subtracting 418 from 520 leaves us with 102.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1020, and continue the process.

The final result is 255372.1722 with a remainder of 0.00102.