We look at the division of 83422673 by 309 
The aim is to understand the frequency of 309 in 83422673.

Step 1:
309 can be fit into 8 0 times, resulting in a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Append the next digit (3) from the dividend to 8 and continue with: 83 / 309

Moving on to step 2:
309 can be fit into 83 0 times, resulting in a remainder of 83.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 83 leaves us with 83.
Grab the next digit (4) from the dividend, add it to 83, then carry on: 834 / 309

Going ahead to step 3:
834 divided by 309 is 2 with a remainder of 216.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we subtract 618 from 834, we get 216.
Append the next digit (2) from the dividend to 216 and continue with: 2162 / 309

Going ahead to step 4:
309 can be fit into 2162 6 times, resulting in a remainder of 308.
The next digit of our result is 6. 
Result so far: 26.0
Deduct 1854 from 2162 and we're left with 308.
Append the next digit (2) from the dividend to 308 and continue with: 3082 / 309

Advancing to step 5:
When dividing 3082 by 309, we get 9 with a remainder of 301.
Use 9 as the next digit of our solution. 
Result so far: 269.0
Subtracting 2781 from 3082 leaves us with 301.
Include the next digit (6) from the dividend after 301, then repeat: 3016 / 309

Let's proceed to step 6:
309 goes into 3016 9 times with a remainder of 235.
The next digit of our result is 9. 
Result so far: 2699.0
The remainder is 235 after subtracting 2781 from 3016.
Bring next digit (7) of the dividend behind the 235 and repeat the process: 2357 / 309

Let's proceed to step 7:
If we divide 2357 by 309, we get 7 and a remainder of 194.
Put 7 as the next digit of the answer. 
Result so far: 26997.0
The remainder is 194 after subtracting 2163 from 2357.
Bring next digit (3) of the dividend behind the 194 and repeat the process: 1943 / 309

Going ahead to step 8:
309 goes into 1943 6 times with a remainder of 89.
The number 6 becomes the next digit in our result. 
Result so far: 269976.0
If we take 1854 away from 1943, we end up with 89.
Since there are no more digits in the dividend, we add a zero to the remainder making it 890, and continue the process.

Moving on to step 9:
309 goes into 890 2 times with a remainder of 272.
The next digit of our result is 2. 
Result so far: 269976.2
Subtract 618 from 890 to get 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

Let's proceed to step 10:
2720 divided by 309 is 8 with a remainder of 248.
Put 8 as the next digit of the answer. 
Result so far: 269976.28
Deduct 2472 from 2720 and we're left with 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

On to step 11:
When dividing 2480 by 309, we get 8 with a remainder of 8.
The number 8 becomes the next digit in our result. 
Result so far: 269976.288
If we take 2472 away from 2480, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

After the division, we end up with 269976.288 and a remainder of 0.0008.