403479 ÷ 42 
We want to figure out the number of times 403479 can be divided by 42.

Step 1:
4 divided by 42 is 0 with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Append the next digit (0) from the dividend to 4 and continue with: 40 / 42

Step 2:
40 divided by 42 is 0 with a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 40, we get 40.
Take the next digit (3) from the dividend and append it to 40, then repeat: 403 / 42

Moving on to step 3:
When dividing 403 by 42, we get 9 with a remainder of 25.
The next digit of our result is 9. 
Result so far: 9.0
The remainder is 25 after subtracting 378 from 403.
Bring next digit (4) of the dividend behind the 25 and repeat the process: 254 / 42

Moving on to step 4:
254 divided by 42 is 6 with a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 96.0
If we subtract 252 from 254, we get 2.
Grab the next digit (7) from the dividend, add it to 2, then carry on: 27 / 42

Let's proceed to step 5:
42 can be fit into 27 0 times, resulting in a remainder of 27.
Use 0 as the next digit of our solution. 
Result so far: 960.0
Subtracting 0 from 27 leaves us with 27.
Fetch the next digit (9) from the dividend, attach it to 27 and continue: 279 / 42

Advancing to step 6:
If we divide 279 by 42, we get 6 and a remainder of 27.
Record the quotient 6 as the next digit in the result. 
Result so far: 9606.0
Subtracting 252 from 279 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.

Step 7:
270 divided by 42 is 6 with a remainder of 18.
Put 6 as the next digit of the answer. 
Result so far: 9606.6
Deduct 252 from 270 and we're left 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.

Let's proceed to step 8:
When dividing 180 by 42, we get 4 with a remainder of 12.
Write down 4 as next digit of the result. 
Result so far: 9606.64
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.

Going ahead to step 9:
42 goes into 120 2 times with a remainder of 36.
The next digit of our result is 2. 
Result so far: 9606.642
The remainder is 36 after subtracting 84 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Step 10:
The number 42 fits into 360 8 times, leaving a remainder of 24.
Use 8 as the next digit of our solution. 
Result so far: 9606.6428
If we subtract 336 from 360, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 11:
42 can be fit into 240 5 times, resulting in a remainder of 30.
Write down 5 as next digit of the result. 
Result so far: 9606.64285
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.

Step 12:
42 goes into 300 7 times with a remainder of 6.
Put 7 as the next digit of the answer. 
Result so far: 9606.642857
If we take 294 away from 300, we end up 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:
60 divided by 42 is 1 with a remainder of 18.
Record the quotient 1 as the next digit in the result. 
Result so far: 9606.6428571
The remainder is 18 after subtracting 42 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 14:
The number 42 fits into 180 4 times, leaving a remainder of 12.
Put 4 as the next digit of the answer. 
Result so far: 9606.64285714
Subtract 168 from 180 to 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.

Our division results in 9606.64285714 with a remaining 1.2e-08.