We look at the division of 17863454 by 503 
The aim is to understand the frequency of 503 in 17863454.

Going ahead to step 1:
1 divided by 503 is 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Grab the next digit (7) from the dividend, add it to 1, then carry on: 17 / 503

On to step 2:
When dividing 17 by 503, we get 0 with a remainder of 17.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 17 and we're left with 17.
Take the next digit (8) from the dividend and append it to 17, then repeat: 178 / 503

On to step 3:
If we divide 178 by 503, we get 0 and a remainder of 178.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 178, we get 178.
Append the next digit (6) from the dividend to 178 and continue with: 1786 / 503

Going ahead to step 4:
503 can be fit into 1786 3 times, resulting in a remainder of 277.
Write down 3 as next digit of the result. 
Result so far: 3.0
If we subtract 1509 from 1786, we get 277.
Take the next digit (3) from the dividend and append it to 277, then repeat: 2773 / 503

Let's proceed to step 5:
503 goes into 2773 5 times with a remainder of 258.
Put 5 as the next digit of the answer. 
Result so far: 35.0
Deduct 2515 from 2773 and we're left with 258.
Append the next digit (4) from the dividend to 258 and continue with: 2584 / 503

Step 6:
If we divide 2584 by 503, we get 5 and a remainder of 69.
Record the quotient 5 as the next digit in the result. 
Result so far: 355.0
Subtracting 2515 from 2584 leaves us with 69.
Grab the next digit (5) from the dividend, add it to 69, then carry on: 695 / 503

On to step 7:
When dividing 695 by 503, we get 1 with a remainder of 192.
Put 1 as the next digit of the answer. 
Result so far: 3551.0
The remainder is 192 after subtracting 503 from 695.
Bring next digit (4) of the dividend behind the 192 and repeat the process: 1924 / 503

On to step 8:
503 goes into 1924 3 times with a remainder of 415.
Write down 3 as next digit of the result. 
Result so far: 35513.0
Subtracting 1509 from 1924 leaves us with 415.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4150, and continue the process.

Step 9:
503 can be fit into 4150 8 times, resulting in a remainder of 126.
Record the quotient 8 as the next digit in the result. 
Result so far: 35513.8
The remainder is 126 after subtracting 4024 from 4150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1260, and continue the process.

Advancing to step 10:
503 can be fit into 1260 2 times, resulting in a remainder of 254.
Record the quotient 2 as the next digit in the result. 
Result so far: 35513.82
If we take 1006 away from 1260, we end up with 254.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2540, and continue the process.

Advancing to step 11:
The number 503 fits into 2540 5 times, leaving a remainder of 25.
Write down 5 as next digit of the result. 
Result so far: 35513.825
The remainder is 25 after subtracting 2515 from 2540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Moving on to step 12:
503 goes into 250 0 times with a remainder of 250.
Use 0 as the next digit of our solution. 
Result so far: 35513.825
The remainder is 250 after subtracting 0 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Going ahead to step 13:
503 goes into 2500 4 times with a remainder of 488.
The next digit of our result is 4. 
Result so far: 35513.82504
Subtracting 2012 from 2500 leaves us with 488.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4880, and continue the process.

Going ahead to step 14:
The number 503 fits into 4880 9 times, leaving a remainder of 353.
Write down 9 as next digit of the result. 
Result so far: 35513.825049
If we subtract 4527 from 4880, we get 353.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3530, and continue the process.

Going ahead to step 15:
503 goes into 3530 7 times with a remainder of 9.
The number 7 becomes the next digit in our result. 
Result so far: 35513.8250497
Deduct 3521 from 3530 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 16:
90 divided by 503 is 0 with a remainder of 90.
Put 0 as the next digit of the answer. 
Result so far: 35513.8250497
If we take 0 away from 90, we end up with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

In conclusion, the division gives 35513.8250497 with a balance of 9e-08.