We look at the division of 812133 by 42 
We want to figure out the number of times 812133 can be divided by 42.

On to step 1:
8 divided by 42 is 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Include the next digit (1) from the dividend after 8, then repeat: 81 / 42

Moving on to step 2:
If we divide 81 by 42, we get 1 and a remainder of 39.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 42 from 81 and we're left with 39.
Include the next digit (2) from the dividend after 39, then repeat: 392 / 42

Moving on to step 3:
392 divided by 42 is 9 with a remainder of 14.
Record the quotient 9 as the next digit in the result. 
Result so far: 19.0
Subtracting 378 from 392 leaves us with 14.
Bring next digit (1) of the dividend behind the 14 and repeat the process: 141 / 42

Advancing to step 4:
The number 42 fits into 141 3 times, leaving a remainder of 15.
Record the quotient 3 as the next digit in the result. 
Result so far: 193.0
Subtracting 126 from 141 leaves us with 15.
Take the next digit (3) from the dividend and append it to 15, then repeat: 153 / 42

Going ahead to step 5:
If we divide 153 by 42, we get 3 and a remainder of 27.
Use 3 as the next digit of our solution. 
Result so far: 1933.0
Subtract 126 from 153 to get 27.
Take the next digit (3) from the dividend and append it to 27, then repeat: 273 / 42

On to step 6:
42 goes into 273 6 times with a remainder of 21.
Record the quotient 6 as the next digit in the result. 
Result so far: 19336.0
If we subtract 252 from 273, we get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Let's proceed to step 7:
42 can be fit into 210 5 times, resulting in a remainder of 0.
The next digit of our result is 5. 
Result so far: 19336.5
If we take 210 away from 210, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 8:
When dividing 0 by 42, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 19336.5
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 9:
0 divided by 42 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 19336.5
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 19336.5, with a leftover of 0.0.