We look at the division of 390315 by 34 
Let's see how many times 34 fits into 390315.

Step 1:
If we divide 3 by 34, we get 0 and a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 34

Step 2:
34 goes into 39 1 times with a remainder of 5.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 34 away from 39, we end up with 5.
Append the next digit (0) from the dividend to 5 and continue with: 50 / 34

Advancing to step 3:
34 goes into 50 1 times with a remainder of 16.
The number 1 becomes the next digit in our result. 
Result so far: 11.0
Subtract 34 from 50 to get 16.
Grab the next digit (3) from the dividend, add it to 16, then carry on: 163 / 34

Let's proceed to step 4:
When dividing 163 by 34, we get 4 with a remainder of 27.
Use 4 as the next digit of our solution. 
Result so far: 114.0
If we subtract 136 from 163, we get 27.
Include the next digit (1) from the dividend after 27, then repeat: 271 / 34

Moving on to step 5:
If we divide 271 by 34, we get 7 and a remainder of 33.
The number 7 becomes the next digit in our result. 
Result so far: 1147.0
Subtracting 238 from 271 leaves us with 33.
Bring next digit (5) of the dividend behind the 33 and repeat the process: 335 / 34

Advancing to step 6:
34 can be fit into 335 9 times, resulting in a remainder of 29.
Write down 9 as next digit of the result. 
Result so far: 11479.0
If we subtract 306 from 335, we get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Moving on to step 7:
34 can be fit into 290 8 times, resulting in a remainder of 18.
The number 8 becomes the next digit in our result. 
Result so far: 11479.8
If we take 272 away from 290, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 8:
180 divided by 34 is 5 with a remainder of 10.
Write down 5 as next digit of the result. 
Result so far: 11479.85
Deduct 170 from 180 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 9:
When dividing 100 by 34, we get 2 with a remainder of 32.
The next digit of our result is 2. 
Result so far: 11479.852
Subtracting 68 from 100 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Moving on to step 10:
34 goes into 320 9 times with a remainder of 14.
The next digit of our result is 9. 
Result so far: 11479.8529
If we take 306 away from 320, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Advancing to step 11:
140 divided by 34 is 4 with a remainder of 4.
Write down 4 as next digit of the result. 
Result so far: 11479.85294
Subtract 136 from 140 to 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 12:
34 goes into 40 1 times with a remainder of 6.
Write down 1 as next digit of the result. 
Result so far: 11479.852941
If we subtract 34 from 40, we 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.

On to step 13:
34 can be fit into 60 1 times, resulting in a remainder of 26.
Write down 1 as next digit of the result. 
Result so far: 11479.8529411
Subtract 34 from 60 to get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

The final outcome is 11479.8529411, with a leftover of 2.6e-07.