818502 ÷ 42 
Our goal is to divide 818502 by 42.

Step 1:
42 can be fit into 8 0 times, resulting in a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Bring next digit (1) of the dividend behind the 8 and repeat the process: 81 / 42

Step 2:
The number 42 fits into 81 1 times, leaving a remainder of 39.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 42 from 81 leaves us with 39.
Fetch the next digit (8) from the dividend, attach it to 39 and continue: 398 / 42

Let's proceed to step 3:
When dividing 398 by 42, we get 9 with a remainder of 20.
The next digit of our result is 9. 
Result so far: 19.0
Subtract 378 from 398 to get 20.
Fetch the next digit (5) from the dividend, attach it to 20 and continue: 205 / 42

Moving on to step 4:
42 goes into 205 4 times with a remainder of 37.
Put 4 as the next digit of the answer. 
Result so far: 194.0
If we take 168 away from 205, we end up with 37.
Append the next digit (0) from the dividend to 37 and continue with: 370 / 42

Advancing to step 5:
The number 42 fits into 370 8 times, leaving a remainder of 34.
Write down 8 as next digit of the result. 
Result so far: 1948.0
If we subtract 336 from 370, we get 34.
Include the next digit (2) from the dividend after 34, then repeat: 342 / 42

Moving on to step 6:
When dividing 342 by 42, we get 8 with a remainder of 6.
Use 8 as the next digit of our solution. 
Result so far: 19488.0
Deduct 336 from 342 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.

Step 7:
60 divided by 42 is 1 with a remainder of 18.
The next digit of our result is 1. 
Result so far: 19488.1
If we take 42 away from 60, 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.

Step 8:
42 goes into 180 4 times with a remainder of 12.
Put 4 as the next digit of the answer. 
Result so far: 19488.14
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.

Moving on to step 9:
42 goes into 120 2 times with a remainder of 36.
The number 2 becomes the next digit in our result. 
Result so far: 19488.142
Deduct 84 from 120 and we're left with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Going ahead to step 10:
If we divide 360 by 42, we get 8 and a remainder of 24.
Record the quotient 8 as the next digit in the result. 
Result so far: 19488.1428
Subtracting 336 from 360 leaves us with 24.
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:
The number 42 fits into 240 5 times, leaving a remainder of 30.
Use 5 as the next digit of our solution. 
Result so far: 19488.14285
Subtract 210 from 240 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 12:
42 can be fit into 300 7 times, resulting in a remainder of 6.
Write down 7 as next digit of the result. 
Result so far: 19488.142857
Subtract 294 from 300 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 13:
The number 42 fits into 60 1 times, leaving a remainder of 18.
Record the quotient 1 as the next digit in the result. 
Result so far: 19488.1428571
If we take 42 away from 60, 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.

Let's proceed to step 14:
The number 42 fits into 180 4 times, leaving a remainder of 12.
The number 4 becomes the next digit in our result. 
Result so far: 19488.14285714
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.

The final outcome is 19488.14285714, with a leftover of 1.2e-08.