We look at the division of 30317188 by 423 
The aim is to understand the frequency of 423 in 30317188.

Going ahead to step 1:
When dividing 3 by 423, we get 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Grab the next digit (0) from the dividend, add it to 3, then carry on: 30 / 423

Moving on to step 2:
423 goes into 30 0 times with a remainder of 30.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 30 after subtracting 0 from 30.
Include the next digit (3) from the dividend after 30, then repeat: 303 / 423

Advancing to step 3:
423 can be fit into 303 0 times, resulting in a remainder of 303.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 303 leaves us with 303.
Bring next digit (1) of the dividend behind the 303 and repeat the process: 3031 / 423

Advancing to step 4:
The number 423 fits into 3031 7 times, leaving a remainder of 70.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
Deduct 2961 from 3031 and we're left with 70.
Fetch the next digit (7) from the dividend, attach it to 70 and continue: 707 / 423

Moving on to step 5:
When dividing 707 by 423, we get 1 with a remainder of 284.
Use 1 as the next digit of our solution. 
Result so far: 71.0
If we subtract 423 from 707, we get 284.
Fetch the next digit (1) from the dividend, attach it to 284 and continue: 2841 / 423

Step 6:
The number 423 fits into 2841 6 times, leaving a remainder of 303.
Record the quotient 6 as the next digit in the result. 
Result so far: 716.0
Deduct 2538 from 2841 and we're left with 303.
Bring next digit (8) of the dividend behind the 303 and repeat the process: 3038 / 423

Let's proceed to step 7:
423 can be fit into 3038 7 times, resulting in a remainder of 77.
Use 7 as the next digit of our solution. 
Result so far: 7167.0
The remainder is 77 after subtracting 2961 from 3038.
Fetch the next digit (8) from the dividend, attach it to 77 and continue: 778 / 423

On to step 8:
423 can be fit into 778 1 times, resulting in a remainder of 355.
Put 1 as the next digit of the answer. 
Result so far: 71671.0
Deduct 423 from 778 and we're left with 355.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3550, and continue the process.

Advancing to step 9:
423 can be fit into 3550 8 times, resulting in a remainder of 166.
Use 8 as the next digit of our solution. 
Result so far: 71671.8
Deduct 3384 from 3550 and we're left with 166.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1660, and continue the process.

Let's proceed to step 10:
The number 423 fits into 1660 3 times, leaving a remainder of 391.
Use 3 as the next digit of our solution. 
Result so far: 71671.83
If we take 1269 away from 1660, we end up with 391.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3910, and continue the process.

Going ahead to step 11:
When dividing 3910 by 423, we get 9 with a remainder of 103.
The next digit of our result is 9. 
Result so far: 71671.839
If we take 3807 away from 3910, we end up with 103.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1030, and continue the process.

Moving on to step 12:
The number 423 fits into 1030 2 times, leaving a remainder of 184.
Use 2 as the next digit of our solution. 
Result so far: 71671.8392
Deduct 846 from 1030 and we're left with 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 13:
1840 divided by 423 is 4 with a remainder of 148.
Use 4 as the next digit of our solution. 
Result so far: 71671.83924
Subtracting 1692 from 1840 leaves us with 148.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1480, and continue the process.

On to step 14:
423 goes into 1480 3 times with a remainder of 211.
Put 3 as the next digit of the answer. 
Result so far: 71671.839243
If we subtract 1269 from 1480, we get 211.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2110, and continue the process.

Going ahead to step 15:
When dividing 2110 by 423, we get 4 with a remainder of 418.
Put 4 as the next digit of the answer. 
Result so far: 71671.8392434
The remainder is 418 after subtracting 1692 from 2110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4180, and continue the process.

Moving on to step 16:
4180 divided by 423 is 9 with a remainder of 373.
Record the quotient 9 as the next digit in the result. 
Result so far: 71671.83924349
Subtracting 3807 from 4180 leaves us with 373.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3730, and continue the process.

After the division, we end up with 71671.83924349 and a remainder of 3.73e-07.