We're dividing 860743 by 3 
Our goal is to divide 860743 by 3.

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
Subtracting 6 from 8 leaves us with 2.
Take the next digit (6) from the dividend and append it to 2, then repeat: 26 / 3

Moving on to step 2:
The number 3 fits into 26 8 times, leaving a remainder of 2.
The next digit of our result is 8. 
Result so far: 28.0
Subtract 24 from 26 to get 2.
Grab the next digit (0) from the dividend, add it to 2, then carry on: 20 / 3

Going ahead to step 3:
20 divided by 3 is 6 with a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 286.0
Subtracting 18 from 20 leaves us with 2.
Include the next digit (7) from the dividend after 2, then repeat: 27 / 3

Advancing to step 4:
If we divide 27 by 3, we get 9 and a remainder of 0.
Write down 9 as next digit of the result. 
Result so far: 2869.0
The remainder is 0 after subtracting 27 from 27.
Fetch the next digit (4) from the dividend, attach it to 0 and continue: 4 / 3

Advancing to step 5:
3 can be fit into 4 1 times, resulting in a remainder of 1.
Use 1 as the next digit of our solution. 
Result so far: 28691.0
The remainder is 1 after subtracting 3 from 4.
Bring next digit (3) of the dividend behind the 1 and repeat the process: 13 / 3

Moving on to step 6:
3 goes into 13 4 times with a remainder of 1.
The next digit of our result is 4. 
Result so far: 286914.0
If we subtract 12 from 13, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 7:
If we divide 10 by 3, we get 3 and a remainder of 1.
Use 3 as the next digit of our solution. 
Result so far: 286914.3
Subtracting 9 from 10 leaves us 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.

Step 8:
When dividing 10 by 3, we get 3 with a remainder of 1.
The next digit of our result is 3. 
Result so far: 286914.33
Deduct 9 from 10 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.

The quotient of the division is 286914.33, and the remainder is 0.001.