We look at the division of 3336255 by 870 
We want to divide 3336255 by 870.

On to step 1:
3 divided by 870 is 0 with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Bring next digit (3) of the dividend behind the 3 and repeat the process: 33 / 870

Advancing to step 2:
The number 870 fits into 33 0 times, leaving a remainder of 33.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 33, we get 33.
Fetch the next digit (3) from the dividend, attach it to 33 and continue: 333 / 870

On to step 3:
870 goes into 333 0 times with a remainder of 333.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 333 leaves us with 333.
Fetch the next digit (6) from the dividend, attach it to 333 and continue: 3336 / 870

On to step 4:
870 goes into 3336 3 times with a remainder of 726.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Subtracting 2610 from 3336 leaves us with 726.
Append the next digit (2) from the dividend to 726 and continue with: 7262 / 870

Let's proceed to step 5:
870 can be fit into 7262 8 times, resulting in a remainder of 302.
The next digit of our result is 8. 
Result so far: 38.0
Subtract 6960 from 7262 to get 302.
Bring next digit (5) of the dividend behind the 302 and repeat the process: 3025 / 870

Going ahead to step 6:
The number 870 fits into 3025 3 times, leaving a remainder of 415.
Put 3 as the next digit of the answer. 
Result so far: 383.0
If we take 2610 away from 3025, we end up with 415.
Bring next digit (5) of the dividend behind the 415 and repeat the process: 4155 / 870

Let's proceed to step 7:
870 goes into 4155 4 times with a remainder of 675.
The number 4 becomes the next digit in our result. 
Result so far: 3834.0
Subtracting 3480 from 4155 leaves us with 675.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6750, and continue the process.

Moving on to step 8:
If we divide 6750 by 870, we get 7 and a remainder of 660.
The number 7 becomes the next digit in our result. 
Result so far: 3834.7
If we subtract 6090 from 6750, we get 660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6600, and continue the process.

On to step 9:
If we divide 6600 by 870, we get 7 and a remainder of 510.
Write down 7 as next digit of the result. 
Result so far: 3834.77
Subtracting 6090 from 6600 leaves us with 510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5100, and continue the process.

After the division, we end up with 3834.77 and a remainder of 0.51.