861683 ÷ 3 
Let's see how many times 3 fits into 861683.

Going ahead to step 1:
3 can be fit into 8 2 times, resulting in a remainder of 2.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
The remainder is 2 after subtracting 6 from 8.
Append the next digit (6) from the dividend to 2 and continue with: 26 / 3

Advancing to step 2:
The number 3 fits into 26 8 times, leaving a remainder of 2.
Put 8 as the next digit of the answer. 
Result so far: 28.0
Subtracting 24 from 26 leaves us with 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 3

Moving on to step 3:
3 goes into 21 7 times with a remainder of 0.
Record the quotient 7 as the next digit in the result. 
Result so far: 287.0
If we subtract 21 from 21, we get 0.
Fetch the next digit (6) from the dividend, attach it to 0 and continue: 6 / 3

Let's proceed to step 4:
When dividing 6 by 3, we get 2 with a remainder of 0.
The next digit of our result is 2. 
Result so far: 2872.0
If we take 6 away from 6, we end up with 0.
Append the next digit (8) from the dividend to 0 and continue with: 8 / 3

On to step 5:
3 goes into 8 2 times with a remainder of 2.
Use 2 as the next digit of our solution. 
Result so far: 28722.0
Subtract 6 from 8 to get 2.
Grab the next digit (3) from the dividend, add it to 2, then carry on: 23 / 3

On to step 6:
When dividing 23 by 3, we get 7 with a remainder of 2.
Put 7 as the next digit of the answer. 
Result so far: 287227.0
Subtract 21 from 23 to 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.

On to step 7:
20 divided by 3 is 6 with a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 287227.6
Deduct 18 from 20 and we're left 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.

On to step 8:
The number 3 fits into 20 6 times, leaving a remainder of 2.
Put 6 as the next digit of the answer. 
Result so far: 287227.66
The remainder is 2 after subtracting 18 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

The quotient of the division is 287227.66, and the remainder is 0.002.