53940316 divided by 209 
The aim is to understand the frequency of 209 in 53940316.

Step 1:
209 can be fit into 5 0 times, resulting in a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Append the next digit (3) from the dividend to 5 and continue with: 53 / 209

Let's proceed to step 2:
209 can be fit into 53 0 times, resulting in a remainder of 53.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 53, we get 53.
Bring next digit (9) of the dividend behind the 53 and repeat the process: 539 / 209

On to step 3:
539 divided by 209 is 2 with a remainder of 121.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Deduct 418 from 539 and we're left with 121.
Include the next digit (4) from the dividend after 121, then repeat: 1214 / 209

On to step 4:
1214 divided by 209 is 5 with a remainder of 169.
Put 5 as the next digit of the answer. 
Result so far: 25.0
Subtracting 1045 from 1214 leaves us with 169.
Include the next digit (0) from the dividend after 169, then repeat: 1690 / 209

Going ahead to step 5:
The number 209 fits into 1690 8 times, leaving a remainder of 18.
Put 8 as the next digit of the answer. 
Result so far: 258.0
Subtracting 1672 from 1690 leaves us with 18.
Fetch the next digit (3) from the dividend, attach it to 18 and continue: 183 / 209

Step 6:
If we divide 183 by 209, we get 0 and a remainder of 183.
The next digit of our result is 0. 
Result so far: 2580.0
Deduct 0 from 183 and we're left with 183.
Bring next digit (1) of the dividend behind the 183 and repeat the process: 1831 / 209

On to step 7:
209 can be fit into 1831 8 times, resulting in a remainder of 159.
Record the quotient 8 as the next digit in the result. 
Result so far: 25808.0
If we subtract 1672 from 1831, we get 159.
Grab the next digit (6) from the dividend, add it to 159, then carry on: 1596 / 209

Let's proceed to step 8:
The number 209 fits into 1596 7 times, leaving a remainder of 133.
Put 7 as the next digit of the answer. 
Result so far: 258087.0
If we take 1463 away from 1596, we end up with 133.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1330, and continue the process.

Step 9:
209 goes into 1330 6 times with a remainder of 76.
Put 6 as the next digit of the answer. 
Result so far: 258087.6
The remainder is 76 after subtracting 1254 from 1330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Going ahead to step 10:
The number 209 fits into 760 3 times, leaving a remainder of 133.
Write down 3 as next digit of the result. 
Result so far: 258087.63
Deduct 627 from 760 and we're left with 133.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1330, and continue the process.

Advancing to step 11:
When dividing 1330 by 209, we get 6 with a remainder of 76.
The number 6 becomes the next digit in our result. 
Result so far: 258087.636
Deduct 1254 from 1330 and we're left with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Moving on to step 12:
The number 209 fits into 760 3 times, leaving a remainder of 133.
The next digit of our result is 3. 
Result so far: 258087.6363
Deduct 627 from 760 and we're left with 133.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1330, and continue the process.

Let's proceed to step 13:
When dividing 1330 by 209, we get 6 with a remainder of 76.
Put 6 as the next digit of the answer. 
Result so far: 258087.63636
Subtract 1254 from 1330 to get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Step 14:
209 goes into 760 3 times with a remainder of 133.
The next digit of our result is 3. 
Result so far: 258087.636363
Deduct 627 from 760 and we're left with 133.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1330, and continue the process.

Step 15:
209 can be fit into 1330 6 times, resulting in a remainder of 76.
Write down 6 as next digit of the result. 
Result so far: 258087.6363636
If we take 1254 away from 1330, we end up with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Moving on to step 16:
209 goes into 760 3 times with a remainder of 133.
Use 3 as the next digit of our solution. 
Result so far: 258087.63636363
The remainder is 133 after subtracting 627 from 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1330, and continue the process.

After the division, we end up with 258087.63636363 and a remainder of 1.33e-07.