Let's divide 66503526 by 203
The aim is to understand the frequency of 203 in 66503526.

Advancing to step 1:
The number 203 fits into 6 0 times, leaving a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Append the next digit (6) from the dividend to 6 and continue with: 66 / 203

Step 2:
The number 203 fits into 66 0 times, leaving a remainder of 66.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 66, we get 66.
Include the next digit (5) from the dividend after 66, then repeat: 665 / 203

On to step 3:
When dividing 665 by 203, we get 3 with a remainder of 56.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Subtracting 609 from 665 leaves us with 56.
Fetch the next digit (0) from the dividend, attach it to 56 and continue: 560 / 203

Step 4:
203 can be fit into 560 2 times, resulting in a remainder of 154.
Write down 2 as next digit of the result. 
Result so far: 32.0
Subtracting 406 from 560 leaves us with 154.
Grab the next digit (3) from the dividend, add it to 154, then carry on: 1543 / 203

Advancing to step 5:
203 can be fit into 1543 7 times, resulting in a remainder of 122.
Use 7 as the next digit of our solution. 
Result so far: 327.0
Deduct 1421 from 1543 and we're left with 122.
Fetch the next digit (5) from the dividend, attach it to 122 and continue: 1225 / 203

Step 6:
The number 203 fits into 1225 6 times, leaving a remainder of 7.
The number 6 becomes the next digit in our result. 
Result so far: 3276.0
Deduct 1218 from 1225 and we're left with 7.
Append the next digit (2) from the dividend to 7 and continue with: 72 / 203

Let's proceed to step 7:
72 divided by 203 is 0 with a remainder of 72.
The next digit of our result is 0. 
Result so far: 32760.0
Subtract 0 from 72 to get 72.
Take the next digit (6) from the dividend and append it to 72, then repeat: 726 / 203

Moving on to step 8:
The number 203 fits into 726 3 times, leaving a remainder of 117.
Use 3 as the next digit of our solution. 
Result so far: 327603.0
Subtracting 609 from 726 leaves us with 117.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1170, and continue the process.

Let's proceed to step 9:
When dividing 1170 by 203, we get 5 with a remainder of 155.
Put 5 as the next digit of the answer. 
Result so far: 327603.5
The remainder is 155 after subtracting 1015 from 1170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1550, and continue the process.

Step 10:
1550 divided by 203 is 7 with a remainder of 129.
Put 7 as the next digit of the answer. 
Result so far: 327603.57
If we take 1421 away from 1550, we end up with 129.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1290, and continue the process.

On to step 11:
If we divide 1290 by 203, we get 6 and a remainder of 72.
Record the quotient 6 as the next digit in the result. 
Result so far: 327603.576
Subtract 1218 from 1290 to get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Step 12:
720 divided by 203 is 3 with a remainder of 111.
Put 3 as the next digit of the answer. 
Result so far: 327603.5763
Deduct 609 from 720 and we're left with 111.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1110, and continue the process.

Let's proceed to step 13:
203 can be fit into 1110 5 times, resulting in a remainder of 95.
The next digit of our result is 5. 
Result so far: 327603.57635
Deduct 1015 from 1110 and we're left with 95.
Since there are no more digits in the dividend, we add a zero to the remainder making it 950, and continue the process.

Advancing to step 14:
203 goes into 950 4 times with a remainder of 138.
Put 4 as the next digit of the answer. 
Result so far: 327603.576354
Deduct 812 from 950 and we're left with 138.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1380, and continue the process.

Step 15:
If we divide 1380 by 203, we get 6 and a remainder of 162.
Use 6 as the next digit of our solution. 
Result so far: 327603.5763546
Deduct 1218 from 1380 and we're left with 162.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1620, and continue the process.

Advancing to step 16:
When dividing 1620 by 203, we get 7 with a remainder of 199.
The number 7 becomes the next digit in our result. 
Result so far: 327603.57635467
Subtracting 1421 from 1620 leaves us with 199.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1990, and continue the process.

The final outcome is 327603.57635467, with a leftover of 1.99e-07.