16865721 ÷ 307 
The aim is to understand the frequency of 307 in 16865721.

Let's proceed to step 1:
The number 307 fits into 1 0 times, leaving a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Include the next digit (6) from the dividend after 1, then repeat: 16 / 307

Let's proceed to step 2:
307 goes into 16 0 times with a remainder of 16.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 16, we get 16.
Take the next digit (8) from the dividend and append it to 16, then repeat: 168 / 307

Step 3:
168 divided by 307 is 0 with a remainder of 168.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 168 to get 168.
Fetch the next digit (6) from the dividend, attach it to 168 and continue: 1686 / 307

Step 4:
307 goes into 1686 5 times with a remainder of 151.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
The remainder is 151 after subtracting 1535 from 1686.
Take the next digit (5) from the dividend and append it to 151, then repeat: 1515 / 307

Moving on to step 5:
1515 divided by 307 is 4 with a remainder of 287.
The number 4 becomes the next digit in our result. 
Result so far: 54.0
The remainder is 287 after subtracting 1228 from 1515.
Take the next digit (7) from the dividend and append it to 287, then repeat: 2877 / 307

Advancing to step 6:
307 goes into 2877 9 times with a remainder of 114.
Put 9 as the next digit of the answer. 
Result so far: 549.0
Subtracting 2763 from 2877 leaves us with 114.
Take the next digit (2) from the dividend and append it to 114, then repeat: 1142 / 307

Going ahead to step 7:
When dividing 1142 by 307, we get 3 with a remainder of 221.
Write down 3 as next digit of the result. 
Result so far: 5493.0
Deduct 921 from 1142 and we're left with 221.
Include the next digit (1) from the dividend after 221, then repeat: 2211 / 307

Let's proceed to step 8:
When dividing 2211 by 307, we get 7 with a remainder of 62.
Record the quotient 7 as the next digit in the result. 
Result so far: 54937.0
Subtract 2149 from 2211 to get 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Going ahead to step 9:
The number 307 fits into 620 2 times, leaving a remainder of 6.
The number 2 becomes the next digit in our result. 
Result so far: 54937.2
Subtract 614 from 620 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 10:
307 goes into 60 0 times with a remainder of 60.
Record the quotient 0 as the next digit in the result. 
Result so far: 54937.2
Subtract 0 from 60 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 11:
The number 307 fits into 600 1 times, leaving a remainder of 293.
The next digit of our result is 1. 
Result so far: 54937.201
Deduct 307 from 600 and we're left with 293.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2930, and continue the process.

Moving on to step 12:
The number 307 fits into 2930 9 times, leaving a remainder of 167.
Use 9 as the next digit of our solution. 
Result so far: 54937.2019
The remainder is 167 after subtracting 2763 from 2930.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1670, and continue the process.

Going ahead to step 13:
When dividing 1670 by 307, we get 5 with a remainder of 135.
Put 5 as the next digit of the answer. 
Result so far: 54937.20195
The remainder is 135 after subtracting 1535 from 1670.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

Step 14:
If we divide 1350 by 307, we get 4 and a remainder of 122.
Write down 4 as next digit of the result. 
Result so far: 54937.201954
Subtracting 1228 from 1350 leaves us with 122.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

Moving on to step 15:
307 goes into 1220 3 times with a remainder of 299.
The number 3 becomes the next digit in our result. 
Result so far: 54937.2019543
The remainder is 299 after subtracting 921 from 1220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2990, and continue the process.

Going ahead to step 16:
307 can be fit into 2990 9 times, resulting in a remainder of 227.
The next digit of our result is 9. 
Result so far: 54937.20195439
Subtracting 2763 from 2990 leaves us with 227.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2270, and continue the process.

The quotient of the division is 54937.20195439, and the remainder is 2.27e-07.