We're dividing 863901 by 6 
We want to figure out the number of times 863901 can be divided by 6.

On to step 1:
When dividing 8 by 6, we get 1 with a remainder of 2.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 2 after subtracting 6 from 8.
Fetch the next digit (6) from the dividend, attach it to 2 and continue: 26 / 6

Step 2:
26 divided by 6 is 4 with a remainder of 2.
Record the quotient 4 as the next digit in the result. 
Result so far: 14.0
Subtracting 24 from 26 leaves us with 2.
Fetch the next digit (3) from the dividend, attach it to 2 and continue: 23 / 6

Going ahead to step 3:
When dividing 23 by 6, we get 3 with a remainder of 5.
Write down 3 as next digit of the result. 
Result so far: 143.0
Subtracting 18 from 23 leaves us with 5.
Bring next digit (9) of the dividend behind the 5 and repeat the process: 59 / 6

Step 4:
The number 6 fits into 59 9 times, leaving a remainder of 5.
The number 9 becomes the next digit in our result. 
Result so far: 1439.0
If we subtract 54 from 59, we get 5.
Include the next digit (0) from the dividend after 5, then repeat: 50 / 6

Moving on to step 5:
The number 6 fits into 50 8 times, leaving a remainder of 2.
Use 8 as the next digit of our solution. 
Result so far: 14398.0
Subtract 48 from 50 to get 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 6

Moving on to step 6:
The number 6 fits into 21 3 times, leaving a remainder of 3.
Record the quotient 3 as the next digit in the result. 
Result so far: 143983.0
The remainder is 3 after subtracting 18 from 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 7:
6 goes into 30 5 times with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 143983.5
If we take 30 away from 30, 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.

Moving on to step 8:
6 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 143983.5
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.

Going ahead to step 9:
6 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 143983.5
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.

After the division, we end up with 143983.5 and a remainder of 0.0.