We look at the division of 66484149 by 203 
The aim is to understand the frequency of 203 in 66484149.

On to step 1:
When dividing 6 by 203, we get 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Grab the next digit (6) from the dividend, add it to 6, then carry on: 66 / 203

Let's proceed to step 2:
The number 203 fits into 66 0 times, leaving a remainder of 66.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 66 after subtracting 0 from 66.
Fetch the next digit (4) from the dividend, attach it to 66 and continue: 664 / 203

Step 3:
When dividing 664 by 203, we get 3 with a remainder of 55.
Write down 3 as next digit of the result. 
Result so far: 3.0
Subtracting 609 from 664 leaves us with 55.
Grab the next digit (8) from the dividend, add it to 55, then carry on: 558 / 203

Advancing to step 4:
If we divide 558 by 203, we get 2 and a remainder of 152.
The next digit of our result is 2. 
Result so far: 32.0
Subtract 406 from 558 to get 152.
Take the next digit (4) from the dividend and append it to 152, then repeat: 1524 / 203

On to step 5:
203 can be fit into 1524 7 times, resulting in a remainder of 103.
The number 7 becomes the next digit in our result. 
Result so far: 327.0
The remainder is 103 after subtracting 1421 from 1524.
Append the next digit (1) from the dividend to 103 and continue with: 1031 / 203

Step 6:
203 can be fit into 1031 5 times, resulting in a remainder of 16.
Use 5 as the next digit of our solution. 
Result so far: 3275.0
Subtracting 1015 from 1031 leaves us with 16.
Append the next digit (4) from the dividend to 16 and continue with: 164 / 203

On to step 7:
If we divide 164 by 203, we get 0 and a remainder of 164.
Use 0 as the next digit of our solution. 
Result so far: 32750.0
If we take 0 away from 164, we end up with 164.
Include the next digit (9) from the dividend after 164, then repeat: 1649 / 203

Going ahead to step 8:
203 can be fit into 1649 8 times, resulting in a remainder of 25.
Write down 8 as next digit of the result. 
Result so far: 327508.0
If we subtract 1624 from 1649, we get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Step 9:
250 divided by 203 is 1 with a remainder of 47.
The number 1 becomes the next digit in our result. 
Result so far: 327508.1
Deduct 203 from 250 and we're left 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.

Going ahead to step 10:
470 divided by 203 is 2 with a remainder of 64.
The next digit of our result is 2. 
Result so far: 327508.12
Deduct 406 from 470 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Step 11:
640 divided by 203 is 3 with a remainder of 31.
Record the quotient 3 as the next digit in the result. 
Result so far: 327508.123
If we take 609 away from 640, we end up with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Step 12:
203 can be fit into 310 1 times, resulting in a remainder of 107.
Put 1 as the next digit of the answer. 
Result so far: 327508.1231
If we take 203 away from 310, we end up with 107.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1070, and continue the process.

On to step 13:
203 goes into 1070 5 times with a remainder of 55.
The number 5 becomes the next digit in our result. 
Result so far: 327508.12315
If we take 1015 away from 1070, we end up with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

On to step 14:
If we divide 550 by 203, we get 2 and a remainder of 144.
The next digit of our result is 2. 
Result so far: 327508.123152
The remainder is 144 after subtracting 406 from 550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1440, and continue the process.

Step 15:
1440 divided by 203 is 7 with a remainder of 19.
Use 7 as the next digit of our solution. 
Result so far: 327508.1231527
If we take 1421 away from 1440, we end up 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.

On to step 16:
190 divided by 203 is 0 with a remainder of 190.
Use 0 as the next digit of our solution. 
Result so far: 327508.1231527
Deduct 0 from 190 and we're left with 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

After the division, we end up with 327508.1231527 and a remainder of 1.9e-07.