312872 ÷ 9 
We want to figure out the number of times 312872 can be divided by 9.

Let's proceed to step 1:
When dividing 3 by 9, we get 0 with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Append the next digit (1) from the dividend to 3 and continue with: 31 / 9

Advancing to step 2:
If we divide 31 by 9, we get 3 and a remainder of 4.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Deduct 27 from 31 and we're left with 4.
Include the next digit (2) from the dividend after 4, then repeat: 42 / 9

Going ahead to step 3:
If we divide 42 by 9, we get 4 and a remainder of 6.
Use 4 as the next digit of our solution. 
Result so far: 34.0
Deduct 36 from 42 and we're left with 6.
Append the next digit (8) from the dividend to 6 and continue with: 68 / 9

Let's proceed to step 4:
If we divide 68 by 9, we get 7 and a remainder of 5.
The number 7 becomes the next digit in our result. 
Result so far: 347.0
If we take 63 away from 68, we end up with 5.
Fetch the next digit (7) from the dividend, attach it to 5 and continue: 57 / 9

Going ahead to step 5:
9 can be fit into 57 6 times, resulting in a remainder of 3.
The next digit of our result is 6. 
Result so far: 3476.0
If we subtract 54 from 57, we get 3.
Bring next digit (2) of the dividend behind the 3 and repeat the process: 32 / 9

Step 6:
9 goes into 32 3 times with a remainder of 5.
Put 3 as the next digit of the answer. 
Result so far: 34763.0
Subtract 27 from 32 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 7:
When dividing 50 by 9, we get 5 with a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 34763.5
Subtract 45 from 50 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 8:
50 divided by 9 is 5 with a remainder of 5.
The next digit of our result is 5. 
Result so far: 34763.55
Subtract 45 from 50 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

The final outcome is 34763.55, with a leftover of 0.005.