390851 ÷ 4 
Let's see how many times 4 fits into 390851.

Going ahead to step 1:
The number 4 fits into 3 0 times, leaving a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 4

Step 2:
If we divide 39 by 4, we get 9 and a remainder of 3.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
If we subtract 36 from 39, we get 3.
Include the next digit (0) from the dividend after 3, then repeat: 30 / 4

On to step 3:
The number 4 fits into 30 7 times, leaving a remainder of 2.
Put 7 as the next digit of the answer. 
Result so far: 97.0
If we take 28 away from 30, we end up with 2.
Take the next digit (8) from the dividend and append it to 2, then repeat: 28 / 4

Moving on to step 4:
4 can be fit into 28 7 times, resulting in a remainder of 0.
Put 7 as the next digit of the answer. 
Result so far: 977.0
The remainder is 0 after subtracting 28 from 28.
Bring next digit (5) of the dividend behind the 0 and repeat the process: 5 / 4

Step 5:
4 can be fit into 5 1 times, resulting in a remainder of 1.
The next digit of our result is 1. 
Result so far: 9771.0
Subtract 4 from 5 to get 1.
Bring next digit (1) of the dividend behind the 1 and repeat the process: 11 / 4

Step 6:
11 divided by 4 is 2 with a remainder of 3.
The number 2 becomes the next digit in our result. 
Result so far: 97712.0
The remainder is 3 after subtracting 8 from 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 7:
4 goes into 30 7 times with a remainder of 2.
Write down 7 as next digit of the result. 
Result so far: 97712.7
If we take 28 away from 30, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 8:
4 can be fit into 20 5 times, resulting in a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 97712.75
If we subtract 20 from 20, 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.

Step 9:
4 can be fit into 0 0 times, resulting in a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 97712.75
Subtract 0 from 0 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.

Moving on to step 10:
The number 4 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 97712.75
Subtracting 0 from 0 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.

The final result is 97712.75 with a remainder of 0.0.