We look at the division of 57316999 by 909 
The aim is to understand the frequency of 909 in 57316999.

Let's proceed to step 1:
If we divide 5 by 909, we get 0 and a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Append the next digit (7) from the dividend to 5 and continue with: 57 / 909

Step 2:
909 can be fit into 57 0 times, resulting in a remainder of 57.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 57 and we're left with 57.
Include the next digit (3) from the dividend after 57, then repeat: 573 / 909

Let's proceed to step 3:
573 divided by 909 is 0 with a remainder of 573.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 573, we end up with 573.
Take the next digit (1) from the dividend and append it to 573, then repeat: 5731 / 909

Let's proceed to step 4:
When dividing 5731 by 909, we get 6 with a remainder of 277.
Put 6 as the next digit of the answer. 
Result so far: 6.0
Subtract 5454 from 5731 to get 277.
Fetch the next digit (6) from the dividend, attach it to 277 and continue: 2776 / 909

On to step 5:
The number 909 fits into 2776 3 times, leaving a remainder of 49.
The next digit of our result is 3. 
Result so far: 63.0
If we subtract 2727 from 2776, we get 49.
Grab the next digit (9) from the dividend, add it to 49, then carry on: 499 / 909

On to step 6:
If we divide 499 by 909, we get 0 and a remainder of 499.
Put 0 as the next digit of the answer. 
Result so far: 630.0
The remainder is 499 after subtracting 0 from 499.
Include the next digit (9) from the dividend after 499, then repeat: 4999 / 909

Step 7:
When dividing 4999 by 909, we get 5 with a remainder of 454.
The number 5 becomes the next digit in our result. 
Result so far: 6305.0
The remainder is 454 after subtracting 4545 from 4999.
Include the next digit (9) from the dividend after 454, then repeat: 4549 / 909

Going ahead to step 8:
4549 divided by 909 is 5 with a remainder of 4.
Record the quotient 5 as the next digit in the result. 
Result so far: 63055.0
The remainder is 4 after subtracting 4545 from 4549.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 9:
909 goes into 40 0 times with a remainder of 40.
Write down 0 as next digit of the result. 
Result so far: 63055.0
The remainder is 40 after subtracting 0 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 10:
400 divided by 909 is 0 with a remainder of 400.
Record the quotient 0 as the next digit in the result. 
Result so far: 63055.0
Subtract 0 from 400 to get 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Our division results in 63055.0 with a remaining 0.4.