We look at the division of 17318318 by 903 
The aim is to understand the frequency of 903 in 17318318.

Moving on to step 1:
The number 903 fits into 1 0 times, leaving a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Grab the next digit (7) from the dividend, add it to 1, then carry on: 17 / 903

Going ahead to step 2:
If we divide 17 by 903, we get 0 and a remainder of 17.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 17, we get 17.
Fetch the next digit (3) from the dividend, attach it to 17 and continue: 173 / 903

On to step 3:
903 can be fit into 173 0 times, resulting in a remainder of 173.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 173 to get 173.
Grab the next digit (1) from the dividend, add it to 173, then carry on: 1731 / 903

Moving on to step 4:
903 can be fit into 1731 1 times, resulting in a remainder of 828.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 903 from 1731 to get 828.
Include the next digit (8) from the dividend after 828, then repeat: 8288 / 903

Let's proceed to step 5:
8288 divided by 903 is 9 with a remainder of 161.
The next digit of our result is 9. 
Result so far: 19.0
Deduct 8127 from 8288 and we're left with 161.
Bring next digit (3) of the dividend behind the 161 and repeat the process: 1613 / 903

Let's proceed to step 6:
The number 903 fits into 1613 1 times, leaving a remainder of 710.
Write down 1 as next digit of the result. 
Result so far: 191.0
If we take 903 away from 1613, we end up with 710.
Take the next digit (1) from the dividend and append it to 710, then repeat: 7101 / 903

Step 7:
903 can be fit into 7101 7 times, resulting in a remainder of 780.
The number 7 becomes the next digit in our result. 
Result so far: 1917.0
Subtracting 6321 from 7101 leaves us with 780.
Bring next digit (8) of the dividend behind the 780 and repeat the process: 7808 / 903

Step 8:
903 goes into 7808 8 times with a remainder of 584.
Record the quotient 8 as the next digit in the result. 
Result so far: 19178.0
Deduct 7224 from 7808 and we're left with 584.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5840, and continue the process.

Going ahead to step 9:
5840 divided by 903 is 6 with a remainder of 422.
Record the quotient 6 as the next digit in the result. 
Result so far: 19178.6
Subtracting 5418 from 5840 leaves us with 422.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4220, and continue the process.

Step 10:
4220 divided by 903 is 4 with a remainder of 608.
Use 4 as the next digit of our solution. 
Result so far: 19178.64
Deduct 3612 from 4220 and we're left with 608.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6080, and continue the process.

Let's proceed to step 11:
The number 903 fits into 6080 6 times, leaving a remainder of 662.
The next digit of our result is 6. 
Result so far: 19178.646
If we take 5418 away from 6080, we end up with 662.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6620, and continue the process.

Step 12:
The number 903 fits into 6620 7 times, leaving a remainder of 299.
Put 7 as the next digit of the answer. 
Result so far: 19178.6467
If we subtract 6321 from 6620, we get 299.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2990, and continue the process.

Advancing to step 13:
The number 903 fits into 2990 3 times, leaving a remainder of 281.
Put 3 as the next digit of the answer. 
Result so far: 19178.64673
If we subtract 2709 from 2990, we get 281.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2810, and continue the process.

Advancing to step 14:
The number 903 fits into 2810 3 times, leaving a remainder of 101.
Record the quotient 3 as the next digit in the result. 
Result so far: 19178.646733
If we take 2709 away from 2810, we end up with 101.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1010, and continue the process.

The quotient of the division is 19178.646733, and the remainder is 1.01e-05.