We divide 21309193 by 303
The aim is to understand the frequency of 303 in 21309193.

On to step 1:
303 can be fit into 2 0 times, resulting in a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 303

Let's proceed to step 2:
The number 303 fits into 21 0 times, leaving a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 21, we end up with 21.
Append the next digit (3) from the dividend to 21 and continue with: 213 / 303

Let's proceed to step 3:
303 goes into 213 0 times with a remainder of 213.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 213 after subtracting 0 from 213.
Fetch the next digit (0) from the dividend, attach it to 213 and continue: 2130 / 303

Step 4:
303 goes into 2130 7 times with a remainder of 9.
Use 7 as the next digit of our solution. 
Result so far: 7.0
If we subtract 2121 from 2130, we get 9.
Include the next digit (9) from the dividend after 9, then repeat: 99 / 303

Moving on to step 5:
303 goes into 99 0 times with a remainder of 99.
Record the quotient 0 as the next digit in the result. 
Result so far: 70.0
Subtracting 0 from 99 leaves us with 99.
Take the next digit (1) from the dividend and append it to 99, then repeat: 991 / 303

Step 6:
303 goes into 991 3 times with a remainder of 82.
The next digit of our result is 3. 
Result so far: 703.0
If we take 909 away from 991, we end up with 82.
Include the next digit (9) from the dividend after 82, then repeat: 829 / 303

On to step 7:
If we divide 829 by 303, we get 2 and a remainder of 223.
The next digit of our result is 2. 
Result so far: 7032.0
Subtract 606 from 829 to get 223.
Bring next digit (3) of the dividend behind the 223 and repeat the process: 2233 / 303

Let's proceed to step 8:
The number 303 fits into 2233 7 times, leaving a remainder of 112.
The number 7 becomes the next digit in our result. 
Result so far: 70327.0
The remainder is 112 after subtracting 2121 from 2233.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Advancing to step 9:
If we divide 1120 by 303, we get 3 and a remainder of 211.
The number 3 becomes the next digit in our result. 
Result so far: 70327.3
If we take 909 away from 1120, we end up with 211.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2110, and continue the process.

Moving on to step 10:
303 can be fit into 2110 6 times, resulting in a remainder of 292.
The number 6 becomes the next digit in our result. 
Result so far: 70327.36
If we take 1818 away from 2110, we end up with 292.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2920, and continue the process.

Step 11:
If we divide 2920 by 303, we get 9 and a remainder of 193.
The next digit of our result is 9. 
Result so far: 70327.369
The remainder is 193 after subtracting 2727 from 2920.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1930, and continue the process.

On to step 12:
The number 303 fits into 1930 6 times, leaving a remainder of 112.
Record the quotient 6 as the next digit in the result. 
Result so far: 70327.3696
Subtract 1818 from 1930 to get 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Going ahead to step 13:
The number 303 fits into 1120 3 times, leaving a remainder of 211.
Record the quotient 3 as the next digit in the result. 
Result so far: 70327.36963
The remainder is 211 after subtracting 909 from 1120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2110, and continue the process.

Advancing to step 14:
2110 divided by 303 is 6 with a remainder of 292.
Use 6 as the next digit of our solution. 
Result so far: 70327.369636
Subtracting 1818 from 2110 leaves us with 292.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2920, and continue the process.

Let's proceed to step 15:
If we divide 2920 by 303, we get 9 and a remainder of 193.
The next digit of our result is 9. 
Result so far: 70327.3696369
Deduct 2727 from 2920 and we're left with 193.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1930, and continue the process.

Going ahead to step 16:
If we divide 1930 by 303, we get 6 and a remainder of 112.
Use 6 as the next digit of our solution. 
Result so far: 70327.36963696
Subtract 1818 from 1930 to get 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

The final result is 70327.36963696 with a remainder of 1.12e-07.