We look at the division of 818515 by 42 
We're looking to find how many times 42 goes into 818515.

Step 1:
The number 42 fits into 8 0 times, leaving a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 42

Moving on to step 2:
The number 42 fits into 81 1 times, leaving a remainder of 39.
Write down 1 as next digit of the result. 
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

On to step 3:
398 divided by 42 is 9 with a remainder of 20.
Put 9 as the next digit of the answer. 
Result so far: 19.0
If we subtract 378 from 398, we get 20.
Take the next digit (5) from the dividend and append it to 20, then repeat: 205 / 42

Moving on to step 4:
205 divided by 42 is 4 with a remainder of 37.
Use 4 as the next digit of our solution. 
Result so far: 194.0
If we take 168 away from 205, we end up with 37.
Fetch the next digit (1) from the dividend, attach it to 37 and continue: 371 / 42

On to step 5:
42 can be fit into 371 8 times, resulting in a remainder of 35.
Write down 8 as next digit of the result. 
Result so far: 1948.0
If we take 336 away from 371, we end up with 35.
Append the next digit (5) from the dividend to 35 and continue with: 355 / 42

Going ahead to step 6:
42 can be fit into 355 8 times, resulting in a remainder of 19.
Put 8 as the next digit of the answer. 
Result so far: 19488.0
The remainder is 19 after subtracting 336 from 355.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

On to step 7:
The number 42 fits into 190 4 times, leaving a remainder of 22.
Write down 4 as next digit of the result. 
Result so far: 19488.4
Deduct 168 from 190 and we're left 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.

Step 8:
When dividing 220 by 42, we get 5 with a remainder of 10.
The number 5 becomes the next digit in our result. 
Result so far: 19488.45
If we subtract 210 from 220, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 9:
42 can be fit into 100 2 times, resulting in a remainder of 16.
Use 2 as the next digit of our solution. 
Result so far: 19488.452
Subtract 84 from 100 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 10:
160 divided by 42 is 3 with a remainder of 34.
Write down 3 as next digit of the result. 
Result so far: 19488.4523
Subtract 126 from 160 to get 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 11:
42 can be fit into 340 8 times, resulting in a remainder of 4.
Use 8 as the next digit of our solution. 
Result so far: 19488.45238
Subtract 336 from 340 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 12:
When dividing 40 by 42, we get 0 with a remainder of 40.
Write down 0 as next digit of the result. 
Result so far: 19488.45238
The remainder is 40 after subtracting 0 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 13:
If we divide 400 by 42, we get 9 and a remainder of 22.
Write down 9 as next digit of the result. 
Result so far: 19488.4523809
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 14:
The number 42 fits into 220 5 times, leaving a remainder of 10.
Write down 5 as next digit of the result. 
Result so far: 19488.45238095
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.

After the division, we end up with 19488.45238095 and a remainder of 1e-08.