We look at the division of 853891 by 3 
We want to divide 853891 by 3.

Let's proceed to step 1:
The number 3 fits into 8 2 times, leaving a remainder of 2.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we take 6 away from 8, we end up with 2.
Grab the next digit (5) from the dividend, add it to 2, then carry on: 25 / 3

Going ahead to step 2:
25 divided by 3 is 8 with a remainder of 1.
The next digit of our result is 8. 
Result so far: 28.0
Subtract 24 from 25 to get 1.
Include the next digit (3) from the dividend after 1, then repeat: 13 / 3

Moving on to step 3:
When dividing 13 by 3, we get 4 with a remainder of 1.
The next digit of our result is 4. 
Result so far: 284.0
The remainder is 1 after subtracting 12 from 13.
Include the next digit (8) from the dividend after 1, then repeat: 18 / 3

Going ahead to step 4:
The number 3 fits into 18 6 times, leaving a remainder of 0.
The number 6 becomes the next digit in our result. 
Result so far: 2846.0
The remainder is 0 after subtracting 18 from 18.
Include the next digit (9) from the dividend after 0, then repeat: 9 / 3

Advancing to step 5:
3 goes into 9 3 times with a remainder of 0.
Record the quotient 3 as the next digit in the result. 
Result so far: 28463.0
If we subtract 9 from 9, we get 0.
Take the next digit (1) from the dividend and append it to 0, then repeat: 1 / 3

Let's proceed to step 6:
3 can be fit into 1 0 times, resulting in a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 284630.0
The remainder is 1 after subtracting 0 from 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 7:
10 divided by 3 is 3 with a remainder of 1.
Write down 3 as next digit of the result. 
Result so far: 284630.3
If we subtract 9 from 10, 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.

Let's proceed to step 8:
If we divide 10 by 3, we get 3 and a remainder of 1.
Write down 3 as next digit of the result. 
Result so far: 284630.33
Subtract 9 from 10 to 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.

Our division results in 284630.33 with a remaining 0.001.