We look at the division of 836581 by 42 
Let's see how many times 42 fits into 836581.

On to step 1:
42 goes into 8 0 times with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Append the next digit (3) from the dividend to 8 and continue with: 83 / 42

Let's proceed to step 2:
The number 42 fits into 83 1 times, leaving a remainder of 41.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 42 from 83 and we're left with 41.
Bring next digit (6) of the dividend behind the 41 and repeat the process: 416 / 42

Advancing to step 3:
The number 42 fits into 416 9 times, leaving a remainder of 38.
The next digit of our result is 9. 
Result so far: 19.0
Subtract 378 from 416 to get 38.
Append the next digit (5) from the dividend to 38 and continue with: 385 / 42

Moving on to step 4:
42 goes into 385 9 times with a remainder of 7.
Record the quotient 9 as the next digit in the result. 
Result so far: 199.0
The remainder is 7 after subtracting 378 from 385.
Include the next digit (8) from the dividend after 7, then repeat: 78 / 42

Going ahead to step 5:
78 divided by 42 is 1 with a remainder of 36.
Put 1 as the next digit of the answer. 
Result so far: 1991.0
Subtract 42 from 78 to get 36.
Grab the next digit (1) from the dividend, add it to 36, then carry on: 361 / 42

Advancing to step 6:
42 can be fit into 361 8 times, resulting in a remainder of 25.
Write down 8 as next digit of the result. 
Result so far: 19918.0
Subtracting 336 from 361 leaves us with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Let's proceed to step 7:
42 can be fit into 250 5 times, resulting in a remainder of 40.
Write down 5 as next digit of the result. 
Result so far: 19918.5
If we take 210 away from 250, 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.

Advancing to step 8:
The number 42 fits into 400 9 times, leaving a remainder of 22.
Use 9 as the next digit of our solution. 
Result so far: 19918.59
The remainder is 22 after subtracting 378 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

On to step 9:
220 divided by 42 is 5 with a remainder of 10.
Put 5 as the next digit of the answer. 
Result so far: 19918.595
Subtract 210 from 220 to 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.

Moving on to step 10:
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: 19918.5952
If we subtract 84 from 100, we 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 11:
The number 42 fits into 160 3 times, leaving a remainder of 34.
Put 3 as the next digit of the answer. 
Result so far: 19918.59523
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.

Advancing to step 12:
340 divided by 42 is 8 with a remainder of 4.
The number 8 becomes the next digit in our result. 
Result so far: 19918.595238
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 13:
40 divided by 42 is 0 with a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 19918.595238
Subtracting 0 from 40 leaves us 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.

Advancing to step 14:
When dividing 400 by 42, we get 9 with a remainder of 22.
Record the quotient 9 as the next digit in the result. 
Result so far: 19918.59523809
Subtract 378 from 400 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

After the division, we end up with 19918.59523809 and a remainder of 2.2e-08.