We look at the division of 390945 by 8 
Our goal is to divide 390945 by 8.

Let's proceed to step 1:
The number 8 fits into 3 0 times, leaving a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 8

Advancing to step 2:
8 goes into 39 4 times with a remainder of 7.
Put 4 as the next digit of the answer. 
Result so far: 4.0
If we subtract 32 from 39, we get 7.
Fetch the next digit (0) from the dividend, attach it to 7 and continue: 70 / 8

Step 3:
The number 8 fits into 70 8 times, leaving a remainder of 6.
Use 8 as the next digit of our solution. 
Result so far: 48.0
If we subtract 64 from 70, we get 6.
Append the next digit (9) from the dividend to 6 and continue with: 69 / 8

Let's proceed to step 4:
8 goes into 69 8 times with a remainder of 5.
Use 8 as the next digit of our solution. 
Result so far: 488.0
If we take 64 away from 69, we end up with 5.
Bring next digit (4) of the dividend behind the 5 and repeat the process: 54 / 8

Moving on to step 5:
The number 8 fits into 54 6 times, leaving a remainder of 6.
Record the quotient 6 as the next digit in the result. 
Result so far: 4886.0
Deduct 48 from 54 and we're left with 6.
Grab the next digit (5) from the dividend, add it to 6, then carry on: 65 / 8

Step 6:
8 can be fit into 65 8 times, resulting in a remainder of 1.
Write down 8 as next digit of the result. 
Result so far: 48868.0
Deduct 64 from 65 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 7:
The number 8 fits into 10 1 times, leaving a remainder of 2.
Record the quotient 1 as the next digit in the result. 
Result so far: 48868.1
If we subtract 8 from 10, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 8:
The number 8 fits into 20 2 times, leaving a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 48868.12
Subtract 16 from 20 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.

Step 9:
8 can be fit into 40 5 times, resulting in a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 48868.125
Subtracting 40 from 40 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 10:
The number 8 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 48868.125
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 11:
0 divided by 8 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 48868.125
If we take 0 away from 0, we end up with 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 48868.125 with a remaining 0.0.