We look at the division of 330913 by 42 
We want to figure out the number of times 330913 can be divided by 42.

On to step 1:
3 divided by 42 is 0 with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Take the next digit (3) from the dividend and append it to 3, then repeat: 33 / 42

Going ahead to step 2:
42 goes into 33 0 times with a remainder of 33.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 33, we get 33.
Grab the next digit (0) from the dividend, add it to 33, then carry on: 330 / 42

Step 3:
42 can be fit into 330 7 times, resulting in a remainder of 36.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
If we subtract 294 from 330, we get 36.
Fetch the next digit (9) from the dividend, attach it to 36 and continue: 369 / 42

On to step 4:
The number 42 fits into 369 8 times, leaving a remainder of 33.
Put 8 as the next digit of the answer. 
Result so far: 78.0
If we subtract 336 from 369, we get 33.
Include the next digit (1) from the dividend after 33, then repeat: 331 / 42

On to step 5:
42 goes into 331 7 times with a remainder of 37.
Put 7 as the next digit of the answer. 
Result so far: 787.0
Deduct 294 from 331 and we're left with 37.
Include the next digit (3) from the dividend after 37, then repeat: 373 / 42

Advancing to step 6:
If we divide 373 by 42, we get 8 and a remainder of 37.
Use 8 as the next digit of our solution. 
Result so far: 7878.0
Subtract 336 from 373 to get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Advancing to step 7:
When dividing 370 by 42, we get 8 with a remainder of 34.
The number 8 becomes the next digit in our result. 
Result so far: 7878.8
If we subtract 336 from 370, we get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Moving on to step 8:
340 divided by 42 is 8 with a remainder of 4.
The number 8 becomes the next digit in our result. 
Result so far: 7878.88
If we subtract 336 from 340, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Our division results in 7878.88 with a remaining 0.004.