We're dividing 878318 by 42 
Let's see how many times 42 fits into 878318.

Advancing to step 1:
When dividing 8 by 42, we get 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Grab the next digit (7) from the dividend, add it to 8, then carry on: 87 / 42

Moving on to step 2:
42 can be fit into 87 2 times, resulting in a remainder of 3.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we take 84 away from 87, we end up with 3.
Include the next digit (8) from the dividend after 3, then repeat: 38 / 42

On to step 3:
38 divided by 42 is 0 with a remainder of 38.
The number 0 becomes the next digit in our result. 
Result so far: 20.0
Deduct 0 from 38 and we're left with 38.
Take the next digit (3) from the dividend and append it to 38, then repeat: 383 / 42

Going ahead to step 4:
42 goes into 383 9 times with a remainder of 5.
The number 9 becomes the next digit in our result. 
Result so far: 209.0
If we subtract 378 from 383, we get 5.
Take the next digit (1) from the dividend and append it to 5, then repeat: 51 / 42

Going ahead to step 5:
51 divided by 42 is 1 with a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 2091.0
If we take 42 away from 51, we end up with 9.
Include the next digit (8) from the dividend after 9, then repeat: 98 / 42

Advancing to step 6:
98 divided by 42 is 2 with a remainder of 14.
The next digit of our result is 2. 
Result so far: 20912.0
Subtracting 84 from 98 leaves us with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 7:
If we divide 140 by 42, we get 3 and a remainder of 14.
Record the quotient 3 as the next digit in the result. 
Result so far: 20912.3
If we take 126 away from 140, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Advancing to step 8:
When dividing 140 by 42, we get 3 with a remainder of 14.
The number 3 becomes the next digit in our result. 
Result so far: 20912.33
If we subtract 126 from 140, we get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

The final result is 20912.33 with a remainder of 0.014.