We're dividing 403159 by 42 
We want to divide 403159 by 42.

Let's proceed to step 1:
The number 42 fits into 4 0 times, leaving a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Bring next digit (0) of the dividend behind the 4 and repeat the process: 40 / 42

Advancing to step 2:
If we divide 40 by 42, we get 0 and a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 40 to get 40.
Append the next digit (3) from the dividend to 40 and continue with: 403 / 42

Advancing to step 3:
The number 42 fits into 403 9 times, leaving a remainder of 25.
Write down 9 as next digit of the result. 
Result so far: 9.0
If we take 378 away from 403, we end up with 25.
Append the next digit (1) from the dividend to 25 and continue with: 251 / 42

Moving on to step 4:
When dividing 251 by 42, we get 5 with a remainder of 41.
Write down 5 as next digit of the result. 
Result so far: 95.0
Subtract 210 from 251 to get 41.
Take the next digit (5) from the dividend and append it to 41, then repeat: 415 / 42

On to step 5:
If we divide 415 by 42, we get 9 and a remainder of 37.
Use 9 as the next digit of our solution. 
Result so far: 959.0
Deduct 378 from 415 and we're left with 37.
Append the next digit (9) from the dividend to 37 and continue with: 379 / 42

Let's proceed to step 6:
379 divided by 42 is 9 with a remainder of 1.
Record the quotient 9 as the next digit in the result. 
Result so far: 9599.0
Subtract 378 from 379 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 7:
42 goes into 10 0 times with a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 9599.0
Subtracting 0 from 10 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 8:
100 divided by 42 is 2 with a remainder of 16.
Write down 2 as next digit of the result. 
Result so far: 9599.02
If we take 84 away from 100, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 9:
42 goes into 160 3 times with a remainder of 34.
The next digit of our result is 3. 
Result so far: 9599.023
If we take 126 away from 160, we end up with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

On to step 10:
42 goes into 340 8 times with a remainder of 4.
The next digit of our result is 8. 
Result so far: 9599.0238
Deduct 336 from 340 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 11:
When dividing 40 by 42, we get 0 with a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 9599.0238
If we take 0 away from 40, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 12:
42 can be fit into 400 9 times, resulting in a remainder of 22.
The number 9 becomes the next digit in our result. 
Result so far: 9599.023809
If we take 378 away from 400, we end up with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Going ahead to step 13:
The number 42 fits into 220 5 times, leaving a remainder of 10.
The next digit of our result is 5. 
Result so far: 9599.0238095
The remainder is 10 after subtracting 210 from 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 14:
42 can be fit into 100 2 times, resulting in a remainder of 16.
The number 2 becomes the next digit in our result. 
Result so far: 9599.02380952
The remainder is 16 after subtracting 84 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

The quotient of the division is 9599.02380952, and the remainder is 1.6e-08.