Let's divide 90108549 by 303
The aim is to understand the frequency of 303 in 90108549.

Let's proceed to step 1:
When dividing 9 by 303, we get 0 with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Grab the next digit (0) from the dividend, add it to 9, then carry on: 90 / 303

Step 2:
303 goes into 90 0 times with a remainder of 90.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 90, we get 90.
Take the next digit (1) from the dividend and append it to 90, then repeat: 901 / 303

Step 3:
The number 303 fits into 901 2 times, leaving a remainder of 295.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Deduct 606 from 901 and we're left with 295.
Take the next digit (0) from the dividend and append it to 295, then repeat: 2950 / 303

Advancing to step 4:
303 goes into 2950 9 times with a remainder of 223.
The next digit of our result is 9. 
Result so far: 29.0
If we subtract 2727 from 2950, we get 223.
Grab the next digit (8) from the dividend, add it to 223, then carry on: 2238 / 303

Moving on to step 5:
The number 303 fits into 2238 7 times, leaving a remainder of 117.
Put 7 as the next digit of the answer. 
Result so far: 297.0
The remainder is 117 after subtracting 2121 from 2238.
Append the next digit (5) from the dividend to 117 and continue with: 1175 / 303

Advancing to step 6:
1175 divided by 303 is 3 with a remainder of 266.
The next digit of our result is 3. 
Result so far: 2973.0
Subtracting 909 from 1175 leaves us with 266.
Take the next digit (4) from the dividend and append it to 266, then repeat: 2664 / 303

On to step 7:
303 goes into 2664 8 times with a remainder of 240.
Put 8 as the next digit of the answer. 
Result so far: 29738.0
Deduct 2424 from 2664 and we're left with 240.
Grab the next digit (9) from the dividend, add it to 240, then carry on: 2409 / 303

Going ahead to step 8:
303 goes into 2409 7 times with a remainder of 288.
Record the quotient 7 as the next digit in the result. 
Result so far: 297387.0
Deduct 2121 from 2409 and we're left with 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

Moving on to step 9:
When dividing 2880 by 303, we get 9 with a remainder of 153.
Record the quotient 9 as the next digit in the result. 
Result so far: 297387.9
Subtract 2727 from 2880 to get 153.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1530, and continue the process.

Let's proceed to step 10:
When dividing 1530 by 303, we get 5 with a remainder of 15.
The next digit of our result is 5. 
Result so far: 297387.95
If we subtract 1515 from 1530, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Let's proceed to step 11:
If we divide 150 by 303, we get 0 and a remainder of 150.
Put 0 as the next digit of the answer. 
Result so far: 297387.95
Subtracting 0 from 150 leaves us with 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Step 12:
The number 303 fits into 1500 4 times, leaving a remainder of 288.
The next digit of our result is 4. 
Result so far: 297387.9504
If we take 1212 away from 1500, we end up with 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

Step 13:
303 can be fit into 2880 9 times, resulting in a remainder of 153.
The number 9 becomes the next digit in our result. 
Result so far: 297387.95049
If we subtract 2727 from 2880, we get 153.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1530, and continue the process.

Let's proceed to step 14:
1530 divided by 303 is 5 with a remainder of 15.
Put 5 as the next digit of the answer. 
Result so far: 297387.950495
Subtracting 1515 from 1530 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 15:
303 can be fit into 150 0 times, resulting in a remainder of 150.
Put 0 as the next digit of the answer. 
Result so far: 297387.950495
Subtract 0 from 150 to get 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Advancing to step 16:
If we divide 1500 by 303, we get 4 and a remainder of 288.
Record the quotient 4 as the next digit in the result. 
Result so far: 297387.95049504
If we subtract 1212 from 1500, we get 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

The final result is 297387.95049504 with a remainder of 2.88e-07.