Let's divide 836129 by 42
Our goal is to divide 836129 by 42.

Advancing to step 1:
8 divided by 42 is 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Grab the next digit (3) from the dividend, add it to 8, then carry on: 83 / 42

Moving on to step 2:
When dividing 83 by 42, we get 1 with a remainder of 41.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 41 after subtracting 42 from 83.
Append the next digit (6) from the dividend to 41 and continue with: 416 / 42

On to step 3:
When dividing 416 by 42, we get 9 with a remainder of 38.
The number 9 becomes the next digit in our result. 
Result so far: 19.0
Subtract 378 from 416 to get 38.
Include the next digit (1) from the dividend after 38, then repeat: 381 / 42

Going ahead to step 4:
381 divided by 42 is 9 with a remainder of 3.
The number 9 becomes the next digit in our result. 
Result so far: 199.0
Subtracting 378 from 381 leaves us with 3.
Append the next digit (2) from the dividend to 3 and continue with: 32 / 42

Advancing to step 5:
If we divide 32 by 42, we get 0 and a remainder of 32.
The number 0 becomes the next digit in our result. 
Result so far: 1990.0
Subtracting 0 from 32 leaves us with 32.
Bring next digit (9) of the dividend behind the 32 and repeat the process: 329 / 42

Going ahead to step 6:
42 can be fit into 329 7 times, resulting in a remainder of 35.
Use 7 as the next digit of our solution. 
Result so far: 19907.0
Subtracting 294 from 329 leaves us with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Going ahead to step 7:
42 goes into 350 8 times with a remainder of 14.
Record the quotient 8 as the next digit in the result. 
Result so far: 19907.8
Deduct 336 from 350 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

On to step 8:
The number 42 fits into 140 3 times, leaving a remainder of 14.
Use 3 as the next digit of our solution. 
Result so far: 19907.83
Deduct 126 from 140 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 9:
42 can be fit into 140 3 times, resulting in a remainder of 14.
Write down 3 as next digit of the result. 
Result so far: 19907.833
If we subtract 126 from 140, we get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

After the division, we end up with 19907.833 and a remainder of 0.0014.