Let's divide 83791719 by 309
The aim is to understand the frequency of 309 in 83791719.

Let's proceed to step 1:
If we divide 8 by 309, we get 0 and a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Take the next digit (3) from the dividend and append it to 8, then repeat: 83 / 309

Let's proceed to step 2:
The number 309 fits into 83 0 times, leaving a remainder of 83.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 83, we end up with 83.
Bring next digit (7) of the dividend behind the 83 and repeat the process: 837 / 309

Let's proceed to step 3:
837 divided by 309 is 2 with a remainder of 219.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtract 618 from 837 to get 219.
Take the next digit (9) from the dividend and append it to 219, then repeat: 2199 / 309

Let's proceed to step 4:
309 can be fit into 2199 7 times, resulting in a remainder of 36.
Record the quotient 7 as the next digit in the result. 
Result so far: 27.0
The remainder is 36 after subtracting 2163 from 2199.
Grab the next digit (1) from the dividend, add it to 36, then carry on: 361 / 309

Moving on to step 5:
The number 309 fits into 361 1 times, leaving a remainder of 52.
Use 1 as the next digit of our solution. 
Result so far: 271.0
If we take 309 away from 361, we end up with 52.
Bring next digit (7) of the dividend behind the 52 and repeat the process: 527 / 309

Moving on to step 6:
309 can be fit into 527 1 times, resulting in a remainder of 218.
Write down 1 as next digit of the result. 
Result so far: 2711.0
Subtract 309 from 527 to get 218.
Append the next digit (1) from the dividend to 218 and continue with: 2181 / 309

On to step 7:
309 can be fit into 2181 7 times, resulting in a remainder of 18.
Write down 7 as next digit of the result. 
Result so far: 27117.0
Subtracting 2163 from 2181 leaves us with 18.
Bring next digit (9) of the dividend behind the 18 and repeat the process: 189 / 309

Let's proceed to step 8:
309 goes into 189 0 times with a remainder of 189.
Put 0 as the next digit of the answer. 
Result so far: 271170.0
The remainder is 189 after subtracting 0 from 189.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1890, and continue the process.

Moving on to step 9:
If we divide 1890 by 309, we get 6 and a remainder of 36.
Use 6 as the next digit of our solution. 
Result so far: 271170.6
If we subtract 1854 from 1890, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Moving on to step 10:
When dividing 360 by 309, we get 1 with a remainder of 51.
Use 1 as the next digit of our solution. 
Result so far: 271170.61
Subtract 309 from 360 to get 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

On to step 11:
510 divided by 309 is 1 with a remainder of 201.
The next digit of our result is 1. 
Result so far: 271170.611
The remainder is 201 after subtracting 309 from 510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2010, and continue the process.

The final result is 271170.611 with a remainder of 0.0201.