We divide 72167686 by 308
The aim is to understand the frequency of 308 in 72167686.

On to step 1:
The number 308 fits into 7 0 times, leaving a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Include the next digit (2) from the dividend after 7, then repeat: 72 / 308

Going ahead to step 2:
308 goes into 72 0 times with a remainder of 72.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 72 to get 72.
Take the next digit (1) from the dividend and append it to 72, then repeat: 721 / 308

Step 3:
308 can be fit into 721 2 times, resulting in a remainder of 105.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtracting 616 from 721 leaves us with 105.
Include the next digit (6) from the dividend after 105, then repeat: 1056 / 308

Going ahead to step 4:
308 goes into 1056 3 times with a remainder of 132.
Record the quotient 3 as the next digit in the result. 
Result so far: 23.0
If we take 924 away from 1056, we end up with 132.
Append the next digit (7) from the dividend to 132 and continue with: 1327 / 308

Going ahead to step 5:
1327 divided by 308 is 4 with a remainder of 95.
Use 4 as the next digit of our solution. 
Result so far: 234.0
Subtract 1232 from 1327 to get 95.
Include the next digit (6) from the dividend after 95, then repeat: 956 / 308

Moving on to step 6:
If we divide 956 by 308, we get 3 and a remainder of 32.
The number 3 becomes the next digit in our result. 
Result so far: 2343.0
The remainder is 32 after subtracting 924 from 956.
Bring next digit (8) of the dividend behind the 32 and repeat the process: 328 / 308

On to step 7:
If we divide 328 by 308, we get 1 and a remainder of 20.
The number 1 becomes the next digit in our result. 
Result so far: 23431.0
The remainder is 20 after subtracting 308 from 328.
Fetch the next digit (6) from the dividend, attach it to 20 and continue: 206 / 308

Going ahead to step 8:
If we divide 206 by 308, we get 0 and a remainder of 206.
Write down 0 as next digit of the result. 
Result so far: 234310.0
If we subtract 0 from 206, we get 206.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2060, and continue the process.

Moving on to step 9:
When dividing 2060 by 308, we get 6 with a remainder of 212.
Use 6 as the next digit of our solution. 
Result so far: 234310.6
If we take 1848 away from 2060, we end up with 212.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

Let's proceed to step 10:
When dividing 2120 by 308, we get 6 with a remainder of 272.
Use 6 as the next digit of our solution. 
Result so far: 234310.66
The remainder is 272 after subtracting 1848 from 2120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

The final outcome is 234310.66, with a leftover of 0.272.