790391 divided by 42 
We want to figure out the number of times 790391 can be divided by 42.

Advancing to step 1:
7 divided by 42 is 0 with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Grab the next digit (9) from the dividend, add it to 7, then carry on: 79 / 42

Moving on to step 2:
The number 42 fits into 79 1 times, leaving a remainder of 37.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 42 from 79 and we're left with 37.
Bring next digit (0) of the dividend behind the 37 and repeat the process: 370 / 42

Let's proceed to step 3:
When dividing 370 by 42, we get 8 with a remainder of 34.
Write down 8 as next digit of the result. 
Result so far: 18.0
Subtracting 336 from 370 leaves us with 34.
Grab the next digit (3) from the dividend, add it to 34, then carry on: 343 / 42

Moving on to step 4:
42 goes into 343 8 times with a remainder of 7.
Put 8 as the next digit of the answer. 
Result so far: 188.0
If we take 336 away from 343, we end up with 7.
Include the next digit (9) from the dividend after 7, then repeat: 79 / 42

Moving on to step 5:
The number 42 fits into 79 1 times, leaving a remainder of 37.
Write down 1 as next digit of the result. 
Result so far: 1881.0
Subtract 42 from 79 to get 37.
Grab the next digit (1) from the dividend, add it to 37, then carry on: 371 / 42

On to step 6:
The number 42 fits into 371 8 times, leaving a remainder of 35.
Record the quotient 8 as the next digit in the result. 
Result so far: 18818.0
If we subtract 336 from 371, we get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Let's proceed to step 7:
If we divide 350 by 42, we get 8 and a remainder of 14.
The next digit of our result is 8. 
Result so far: 18818.8
If we take 336 away from 350, we end up 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.

Step 8:
If we divide 140 by 42, we get 3 and a remainder of 14.
Put 3 as the next digit of the answer. 
Result so far: 18818.83
If we take 126 away from 140, we end up 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 9:
140 divided by 42 is 3 with a remainder of 14.
Put 3 as the next digit of the answer. 
Result so far: 18818.833
Subtracting 126 from 140 leaves us 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.

The final result is 18818.833 with a remainder of 0.0014.