We divide 99310965 by 503
The aim is to understand the frequency of 503 in 99310965.

Moving on to step 1:
9 divided by 503 is 0 with a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Fetch the next digit (9) from the dividend, attach it to 9 and continue: 99 / 503

Advancing to step 2:
503 can be fit into 99 0 times, resulting in a remainder of 99.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 99 and we're left with 99.
Append the next digit (3) from the dividend to 99 and continue with: 993 / 503

Going ahead to step 3:
The number 503 fits into 993 1 times, leaving a remainder of 490.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 503 from 993 leaves us with 490.
Fetch the next digit (1) from the dividend, attach it to 490 and continue: 4901 / 503

Let's proceed to step 4:
503 goes into 4901 9 times with a remainder of 374.
Write down 9 as next digit of the result. 
Result so far: 19.0
Subtracting 4527 from 4901 leaves us with 374.
Grab the next digit (0) from the dividend, add it to 374, then carry on: 3740 / 503

On to step 5:
503 goes into 3740 7 times with a remainder of 219.
Put 7 as the next digit of the answer. 
Result so far: 197.0
Subtract 3521 from 3740 to get 219.
Take the next digit (9) from the dividend and append it to 219, then repeat: 2199 / 503

Step 6:
503 can be fit into 2199 4 times, resulting in a remainder of 187.
Put 4 as the next digit of the answer. 
Result so far: 1974.0
Deduct 2012 from 2199 and we're left with 187.
Fetch the next digit (6) from the dividend, attach it to 187 and continue: 1876 / 503

Moving on to step 7:
1876 divided by 503 is 3 with a remainder of 367.
The next digit of our result is 3. 
Result so far: 19743.0
If we take 1509 away from 1876, we end up with 367.
Grab the next digit (5) from the dividend, add it to 367, then carry on: 3675 / 503

Moving on to step 8:
503 goes into 3675 7 times with a remainder of 154.
Use 7 as the next digit of our solution. 
Result so far: 197437.0
The remainder is 154 after subtracting 3521 from 3675.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1540, and continue the process.

Let's proceed to step 9:
If we divide 1540 by 503, we get 3 and a remainder of 31.
The number 3 becomes the next digit in our result. 
Result so far: 197437.3
The remainder is 31 after subtracting 1509 from 1540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

On to step 10:
503 can be fit into 310 0 times, resulting in a remainder of 310.
Use 0 as the next digit of our solution. 
Result so far: 197437.3
Subtract 0 from 310 to get 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

Advancing to step 11:
3100 divided by 503 is 6 with a remainder of 82.
The next digit of our result is 6. 
Result so far: 197437.306
Deduct 3018 from 3100 and we're left with 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

On to step 12:
503 can be fit into 820 1 times, resulting in a remainder of 317.
Write down 1 as next digit of the result. 
Result so far: 197437.3061
Subtract 503 from 820 to get 317.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3170, and continue the process.

Moving on to step 13:
503 can be fit into 3170 6 times, resulting in a remainder of 152.
Record the quotient 6 as the next digit in the result. 
Result so far: 197437.30616
Deduct 3018 from 3170 and we're left with 152.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1520, and continue the process.

On to step 14:
503 goes into 1520 3 times with a remainder of 11.
Write down 3 as next digit of the result. 
Result so far: 197437.306163
Subtract 1509 from 1520 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Let's proceed to step 15:
When dividing 110 by 503, we get 0 with a remainder of 110.
Put 0 as the next digit of the answer. 
Result so far: 197437.306163
If we take 0 away from 110, we end up with 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Advancing to step 16:
503 can be fit into 1100 2 times, resulting in a remainder of 94.
Use 2 as the next digit of our solution. 
Result so far: 197437.30616302
Subtract 1006 from 1100 to get 94.
Since there are no more digits in the dividend, we add a zero to the remainder making it 940, and continue the process.

The final outcome is 197437.30616302, with a leftover of 9.4e-08.