We divide 309115 by 8
We want to figure out the number of times 309115 can be divided by 8.

Let's proceed to step 1:
When dividing 3 by 8, we get 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Grab the next digit (0) from the dividend, add it to 3, then carry on: 30 / 8

Going ahead to step 2:
30 divided by 8 is 3 with a remainder of 6.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
If we subtract 24 from 30, we get 6.
Bring next digit (9) of the dividend behind the 6 and repeat the process: 69 / 8

Moving on to step 3:
8 goes into 69 8 times with a remainder of 5.
The next digit of our result is 8. 
Result so far: 38.0
If we take 64 away from 69, we end up with 5.
Bring next digit (1) of the dividend behind the 5 and repeat the process: 51 / 8

Let's proceed to step 4:
8 goes into 51 6 times with a remainder of 3.
Record the quotient 6 as the next digit in the result. 
Result so far: 386.0
The remainder is 3 after subtracting 48 from 51.
Take the next digit (1) from the dividend and append it to 3, then repeat: 31 / 8

Advancing to step 5:
8 goes into 31 3 times with a remainder of 7.
Put 3 as the next digit of the answer. 
Result so far: 3863.0
Subtracting 24 from 31 leaves us with 7.
Append the next digit (5) from the dividend to 7 and continue with: 75 / 8

On to step 6:
If we divide 75 by 8, we get 9 and a remainder of 3.
Put 9 as the next digit of the answer. 
Result so far: 38639.0
If we subtract 72 from 75, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 7:
The number 8 fits into 30 3 times, leaving a remainder of 6.
Record the quotient 3 as the next digit in the result. 
Result so far: 38639.3
Subtract 24 from 30 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.

Advancing to step 8:
The number 8 fits into 60 7 times, leaving a remainder of 4.
Record the quotient 7 as the next digit in the result. 
Result so far: 38639.37
If we subtract 56 from 60, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 9:
8 can be fit into 40 5 times, resulting in a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 38639.375
Subtract 40 from 40 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 10:
8 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 38639.375
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 11:
8 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 38639.375
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 38639.375 with a remaining 0.0.