We're dividing 663902 by 42 
Let's see how many times 42 fits into 663902.

On to step 1:
When dividing 6 by 42, we get 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 42

Going ahead to step 2:
If we divide 66 by 42, we get 1 and a remainder of 24.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 24 after subtracting 42 from 66.
Include the next digit (3) from the dividend after 24, then repeat: 243 / 42

Let's proceed to step 3:
If we divide 243 by 42, we get 5 and a remainder of 33.
The next digit of our result is 5. 
Result so far: 15.0
If we subtract 210 from 243, we get 33.
Bring next digit (9) of the dividend behind the 33 and repeat the process: 339 / 42

On to step 4:
If we divide 339 by 42, we get 8 and a remainder of 3.
The next digit of our result is 8. 
Result so far: 158.0
If we subtract 336 from 339, we get 3.
Fetch the next digit (0) from the dividend, attach it to 3 and continue: 30 / 42

Going ahead to step 5:
30 divided by 42 is 0 with a remainder of 30.
The next digit of our result is 0. 
Result so far: 1580.0
The remainder is 30 after subtracting 0 from 30.
Fetch the next digit (2) from the dividend, attach it to 30 and continue: 302 / 42

Let's proceed to step 6:
42 goes into 302 7 times with a remainder of 8.
Write down 7 as next digit of the result. 
Result so far: 15807.0
If we subtract 294 from 302, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 7:
42 can be fit into 80 1 times, resulting in a remainder of 38.
Use 1 as the next digit of our solution. 
Result so far: 15807.1
Subtracting 42 from 80 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Step 8:
The number 42 fits into 380 9 times, leaving a remainder of 2.
Use 9 as the next digit of our solution. 
Result so far: 15807.19
If we take 378 away from 380, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 9:
42 can be fit into 20 0 times, resulting in a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 15807.19
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 10:
200 divided by 42 is 4 with a remainder of 32.
The number 4 becomes the next digit in our result. 
Result so far: 15807.1904
If we take 168 away from 200, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 11:
42 can be fit into 320 7 times, resulting in a remainder of 26.
Write down 7 as next digit of the result. 
Result so far: 15807.19047
Deduct 294 from 320 and we're left with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Let's proceed to step 12:
42 can be fit into 260 6 times, resulting in a remainder of 8.
Write down 6 as next digit of the result. 
Result so far: 15807.190476
If we take 252 away from 260, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 13:
42 can be fit into 80 1 times, resulting in a remainder of 38.
Write down 1 as next digit of the result. 
Result so far: 15807.1904761
Deduct 42 from 80 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Going ahead to step 14:
The number 42 fits into 380 9 times, leaving a remainder of 2.
Write down 9 as next digit of the result. 
Result so far: 15807.19047619
If we subtract 378 from 380, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

The final result is 15807.19047619 with a remainder of 2e-09.