We're dividing 30968553 by 309 
The aim is to understand the frequency of 309 in 30968553.

Advancing to step 1:
The number 309 fits into 3 0 times, leaving a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Include the next digit (0) from the dividend after 3, then repeat: 30 / 309

Advancing to step 2:
If we divide 30 by 309, we get 0 and a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 30 and we're left with 30.
Include the next digit (9) from the dividend after 30, then repeat: 309 / 309

Advancing to step 3:
When dividing 309 by 309, we get 1 with a remainder of 0.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 309 from 309, we get 0.
Append the next digit (6) from the dividend to 0 and continue with: 6 / 309

On to step 4:
When dividing 6 by 309, we get 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 10.0
If we take 0 away from 6, we end up with 6.
Include the next digit (8) from the dividend after 6, then repeat: 68 / 309

On to step 5:
309 goes into 68 0 times with a remainder of 68.
Put 0 as the next digit of the answer. 
Result so far: 100.0
Deduct 0 from 68 and we're left with 68.
Append the next digit (5) from the dividend to 68 and continue with: 685 / 309

Moving on to step 6:
685 divided by 309 is 2 with a remainder of 67.
The next digit of our result is 2. 
Result so far: 1002.0
If we subtract 618 from 685, we get 67.
Bring next digit (5) of the dividend behind the 67 and repeat the process: 675 / 309

Step 7:
309 can be fit into 675 2 times, resulting in a remainder of 57.
Write down 2 as next digit of the result. 
Result so far: 10022.0
The remainder is 57 after subtracting 618 from 675.
Fetch the next digit (3) from the dividend, attach it to 57 and continue: 573 / 309

Advancing to step 8:
When dividing 573 by 309, we get 1 with a remainder of 264.
Write down 1 as next digit of the result. 
Result so far: 100221.0
Deduct 309 from 573 and we're left with 264.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2640, and continue the process.

Moving on to step 9:
If we divide 2640 by 309, we get 8 and a remainder of 168.
Record the quotient 8 as the next digit in the result. 
Result so far: 100221.8
The remainder is 168 after subtracting 2472 from 2640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

Moving on to step 10:
When dividing 1680 by 309, we get 5 with a remainder of 135.
Record the quotient 5 as the next digit in the result. 
Result so far: 100221.85
Deduct 1545 from 1680 and we're left with 135.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

Going ahead to step 11:
309 can be fit into 1350 4 times, resulting in a remainder of 114.
Write down 4 as next digit of the result. 
Result so far: 100221.854
Deduct 1236 from 1350 and we're left with 114.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

Step 12:
The number 309 fits into 1140 3 times, leaving a remainder of 213.
The next digit of our result is 3. 
Result so far: 100221.8543
Subtract 927 from 1140 to get 213.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2130, and continue the process.

Let's proceed to step 13:
If we divide 2130 by 309, we get 6 and a remainder of 276.
Record the quotient 6 as the next digit in the result. 
Result so far: 100221.85436
If we take 1854 away from 2130, we end up with 276.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2760, and continue the process.

Advancing to step 14:
2760 divided by 309 is 8 with a remainder of 288.
The number 8 becomes the next digit in our result. 
Result so far: 100221.854368
The remainder is 288 after subtracting 2472 from 2760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

Moving on to step 15:
309 goes into 2880 9 times with a remainder of 99.
Write down 9 as next digit of the result. 
Result so far: 100221.8543689
Subtract 2781 from 2880 to get 99.
Since there are no more digits in the dividend, we add a zero to the remainder making it 990, and continue the process.

Advancing to step 16:
If we divide 990 by 309, we get 3 and a remainder of 63.
The number 3 becomes the next digit in our result. 
Result so far: 100221.85436893
Deduct 927 from 990 and we're left with 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

After the division, we end up with 100221.85436893 and a remainder of 6.3e-08.