Let's divide 321855 by 85
We want to divide 321855 by 85.

Going ahead to step 1:
The number 85 fits into 3 0 times, leaving a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Fetch the next digit (2) from the dividend, attach it to 3 and continue: 32 / 85

Advancing to step 2:
85 can be fit into 32 0 times, resulting in a remainder of 32.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 32, we end up with 32.
Fetch the next digit (1) from the dividend, attach it to 32 and continue: 321 / 85

On to step 3:
When dividing 321 by 85, we get 3 with a remainder of 66.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Deduct 255 from 321 and we're left with 66.
Include the next digit (8) from the dividend after 66, then repeat: 668 / 85

On to step 4:
The number 85 fits into 668 7 times, leaving a remainder of 73.
The number 7 becomes the next digit in our result. 
Result so far: 37.0
Subtract 595 from 668 to get 73.
Include the next digit (5) from the dividend after 73, then repeat: 735 / 85

Moving on to step 5:
85 goes into 735 8 times with a remainder of 55.
Record the quotient 8 as the next digit in the result. 
Result so far: 378.0
If we subtract 680 from 735, we get 55.
Fetch the next digit (5) from the dividend, attach it to 55 and continue: 555 / 85

Moving on to step 6:
85 can be fit into 555 6 times, resulting in a remainder of 45.
Use 6 as the next digit of our solution. 
Result so far: 3786.0
Subtracting 510 from 555 leaves us with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Let's proceed to step 7:
If we divide 450 by 85, we get 5 and a remainder of 25.
Put 5 as the next digit of the answer. 
Result so far: 3786.5
If we take 425 away from 450, we end up with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Moving on to step 8:
85 can be fit into 250 2 times, resulting in a remainder of 80.
Put 2 as the next digit of the answer. 
Result so far: 3786.52
Subtract 170 from 250 to get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Step 9:
The number 85 fits into 800 9 times, leaving a remainder of 35.
Put 9 as the next digit of the answer. 
Result so far: 3786.529
Subtract 765 from 800 to get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

On to step 10:
If we divide 350 by 85, we get 4 and a remainder of 10.
Write down 4 as next digit of the result. 
Result so far: 3786.5294
Deduct 340 from 350 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 11:
85 goes into 100 1 times with a remainder of 15.
Put 1 as the next digit of the answer. 
Result so far: 3786.52941
The remainder is 15 after subtracting 85 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 12:
If we divide 150 by 85, we get 1 and a remainder of 65.
The next digit of our result is 1. 
Result so far: 3786.529411
Deduct 85 from 150 and we're left with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

The final outcome is 3786.529411, with a leftover of 6.5e-06.