We look at the division of 815622 by 42 
Let's see how many times 42 fits into 815622.

Going ahead to step 1:
If we divide 8 by 42, we get 0 and a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Bring next digit (1) of the dividend behind the 8 and repeat the process: 81 / 42

Let's proceed to step 2:
If we divide 81 by 42, we get 1 and a remainder of 39.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 42 away from 81, we end up with 39.
Grab the next digit (5) from the dividend, add it to 39, then carry on: 395 / 42

Step 3:
42 goes into 395 9 times with a remainder of 17.
Record the quotient 9 as the next digit in the result. 
Result so far: 19.0
Deduct 378 from 395 and we're left with 17.
Include the next digit (6) from the dividend after 17, then repeat: 176 / 42

Advancing to step 4:
42 goes into 176 4 times with a remainder of 8.
Use 4 as the next digit of our solution. 
Result so far: 194.0
The remainder is 8 after subtracting 168 from 176.
Take the next digit (2) from the dividend and append it to 8, then repeat: 82 / 42

Step 5:
82 divided by 42 is 1 with a remainder of 40.
Record the quotient 1 as the next digit in the result. 
Result so far: 1941.0
Deduct 42 from 82 and we're left with 40.
Include the next digit (2) from the dividend after 40, then repeat: 402 / 42

On to step 6:
42 goes into 402 9 times with a remainder of 24.
The number 9 becomes the next digit in our result. 
Result so far: 19419.0
If we subtract 378 from 402, 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.

Advancing to step 7:
42 goes into 240 5 times with a remainder of 30.
Put 5 as the next digit of the answer. 
Result so far: 19419.5
Deduct 210 from 240 and we're left 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.

Let's proceed to step 8:
If we divide 300 by 42, we get 7 and a remainder of 6.
Write down 7 as next digit of the result. 
Result so far: 19419.57
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 9:
When dividing 60 by 42, we get 1 with a remainder of 18.
The number 1 becomes the next digit in our result. 
Result so far: 19419.571
Subtracting 42 from 60 leaves us 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.

On to step 10:
42 can be fit into 180 4 times, resulting in a remainder of 12.
The number 4 becomes the next digit in our result. 
Result so far: 19419.5714
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.

Moving on to step 11:
The number 42 fits into 120 2 times, leaving a remainder of 36.
Record the quotient 2 as the next digit in the result. 
Result so far: 19419.57142
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.

On to step 12:
When dividing 360 by 42, we get 8 with a remainder of 24.
Write down 8 as next digit of the result. 
Result so far: 19419.571428
Subtract 336 from 360 to 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.

Advancing to step 13:
The number 42 fits into 240 5 times, leaving a remainder of 30.
Write down 5 as next digit of the result. 
Result so far: 19419.5714285
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.

Going ahead to step 14:
42 can be fit into 300 7 times, resulting in a remainder of 6.
The number 7 becomes the next digit in our result. 
Result so far: 19419.57142857
Deduct 294 from 300 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.

The quotient of the division is 19419.57142857, and the remainder is 6e-09.