We look at the division of 339051 by 42 
Our goal is to divide 339051 by 42.

Going ahead to step 1:
42 goes into 3 0 times with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Append the next digit (3) from the dividend to 3 and continue with: 33 / 42

Advancing to step 2:
When dividing 33 by 42, we get 0 with a remainder of 33.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 33 leaves us with 33.
Bring next digit (9) of the dividend behind the 33 and repeat the process: 339 / 42

On to step 3:
When dividing 339 by 42, we get 8 with a remainder of 3.
Put 8 as the next digit of the answer. 
Result so far: 8.0
If we subtract 336 from 339, we get 3.
Append the next digit (0) from the dividend to 3 and continue with: 30 / 42

Going ahead to step 4:
42 goes into 30 0 times with a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 80.0
The remainder is 30 after subtracting 0 from 30.
Bring next digit (5) of the dividend behind the 30 and repeat the process: 305 / 42

Step 5:
When dividing 305 by 42, we get 7 with a remainder of 11.
Write down 7 as next digit of the result. 
Result so far: 807.0
Deduct 294 from 305 and we're left with 11.
Include the next digit (1) from the dividend after 11, then repeat: 111 / 42

On to step 6:
When dividing 111 by 42, we get 2 with a remainder of 27.
Record the quotient 2 as the next digit in the result. 
Result so far: 8072.0
Subtracting 84 from 111 leaves us with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Going ahead to step 7:
270 divided by 42 is 6 with a remainder of 18.
Write down 6 as next digit of the result. 
Result so far: 8072.6
If we take 252 away from 270, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 8:
When dividing 180 by 42, we get 4 with a remainder of 12.
The number 4 becomes the next digit in our result. 
Result so far: 8072.64
Deduct 168 from 180 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 9:
120 divided by 42 is 2 with a remainder of 36.
Put 2 as the next digit of the answer. 
Result so far: 8072.642
Subtract 84 from 120 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Moving on to step 10:
42 goes into 360 8 times with a remainder of 24.
Use 8 as the next digit of our solution. 
Result so far: 8072.6428
The remainder is 24 after subtracting 336 from 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 11:
240 divided by 42 is 5 with a remainder of 30.
The next digit of our result is 5. 
Result so far: 8072.64285
Subtracting 210 from 240 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 12:
42 can be fit into 300 7 times, resulting in a remainder of 6.
The number 7 becomes the next digit in our result. 
Result so far: 8072.642857
Deduct 294 from 300 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 13:
The number 42 fits into 60 1 times, leaving a remainder of 18.
Put 1 as the next digit of the answer. 
Result so far: 8072.6428571
If we subtract 42 from 60, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 14:
When dividing 180 by 42, we get 4 with a remainder of 12.
The next digit of our result is 4. 
Result so far: 8072.64285714
If we subtract 168 from 180, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final result is 8072.64285714 with a remainder of 1.2e-08.