We look at the division of 58509520 by 303 
The aim is to understand the frequency of 303 in 58509520.

Going ahead to step 1:
303 goes into 5 0 times with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Bring next digit (8) of the dividend behind the 5 and repeat the process: 58 / 303

Going ahead to step 2:
303 can be fit into 58 0 times, resulting in a remainder of 58.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 58 leaves us with 58.
Include the next digit (5) from the dividend after 58, then repeat: 585 / 303

Moving on to step 3:
303 goes into 585 1 times with a remainder of 282.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 303 from 585, we get 282.
Take the next digit (0) from the dividend and append it to 282, then repeat: 2820 / 303

Moving on to step 4:
2820 divided by 303 is 9 with a remainder of 93.
Use 9 as the next digit of our solution. 
Result so far: 19.0
The remainder is 93 after subtracting 2727 from 2820.
Fetch the next digit (9) from the dividend, attach it to 93 and continue: 939 / 303

Going ahead to step 5:
303 goes into 939 3 times with a remainder of 30.
Put 3 as the next digit of the answer. 
Result so far: 193.0
Subtract 909 from 939 to get 30.
Append the next digit (5) from the dividend to 30 and continue with: 305 / 303

Step 6:
303 goes into 305 1 times with a remainder of 2.
The next digit of our result is 1. 
Result so far: 1931.0
Subtract 303 from 305 to get 2.
Fetch the next digit (2) from the dividend, attach it to 2 and continue: 22 / 303

Advancing to step 7:
The number 303 fits into 22 0 times, leaving a remainder of 22.
Put 0 as the next digit of the answer. 
Result so far: 19310.0
The remainder is 22 after subtracting 0 from 22.
Fetch the next digit (0) from the dividend, attach it to 22 and continue: 220 / 303

Moving on to step 8:
When dividing 220 by 303, we get 0 with a remainder of 220.
Use 0 as the next digit of our solution. 
Result so far: 193100.0
If we take 0 away from 220, we end up with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

On to step 9:
303 goes into 2200 7 times with a remainder of 79.
Record the quotient 7 as the next digit in the result. 
Result so far: 193100.7
If we take 2121 away from 2200, we end up with 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Step 10:
If we divide 790 by 303, we get 2 and a remainder of 184.
Use 2 as the next digit of our solution. 
Result so far: 193100.72
If we subtract 606 from 790, we get 184.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

On to step 11:
When dividing 1840 by 303, we get 6 with a remainder of 22.
Put 6 as the next digit of the answer. 
Result so far: 193100.726
Subtract 1818 from 1840 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Moving on to step 12:
220 divided by 303 is 0 with a remainder of 220.
Write down 0 as next digit of the result. 
Result so far: 193100.726
Deduct 0 from 220 and we're left with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Advancing to step 13:
The number 303 fits into 2200 7 times, leaving a remainder of 79.
Use 7 as the next digit of our solution. 
Result so far: 193100.72607
If we subtract 2121 from 2200, we get 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Step 14:
303 goes into 790 2 times with a remainder of 184.
The next digit of our result is 2. 
Result so far: 193100.726072
Subtract 606 from 790 to get 184.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

On to step 15:
If we divide 1840 by 303, we get 6 and a remainder of 22.
Put 6 as the next digit of the answer. 
Result so far: 193100.7260726
Subtract 1818 from 1840 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Advancing to step 16:
The number 303 fits into 220 0 times, leaving a remainder of 220.
Write down 0 as next digit of the result. 
Result so far: 193100.7260726
The remainder is 220 after subtracting 0 from 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

The final result is 193100.7260726 with a remainder of 2.2e-07.