591808 divided by 42 
We want to figure out the number of times 591808 can be divided by 42.

On to step 1:
When dividing 5 by 42, we get 0 with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Grab the next digit (9) from the dividend, add it to 5, then carry on: 59 / 42

Moving on to step 2:
59 divided by 42 is 1 with a remainder of 17.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 42 from 59 and we're left with 17.
Append the next digit (1) from the dividend to 17 and continue with: 171 / 42

Step 3:
The number 42 fits into 171 4 times, leaving a remainder of 3.
Put 4 as the next digit of the answer. 
Result so far: 14.0
If we take 168 away from 171, we end up with 3.
Include the next digit (8) from the dividend after 3, then repeat: 38 / 42

Moving on to step 4:
When dividing 38 by 42, we get 0 with a remainder of 38.
Put 0 as the next digit of the answer. 
Result so far: 140.0
If we take 0 away from 38, we end up with 38.
Take the next digit (0) from the dividend and append it to 38, then repeat: 380 / 42

Advancing to step 5:
42 goes into 380 9 times with a remainder of 2.
Write down 9 as next digit of the result. 
Result so far: 1409.0
Subtract 378 from 380 to get 2.
Grab the next digit (8) from the dividend, add it to 2, then carry on: 28 / 42

Moving on to step 6:
42 goes into 28 0 times with a remainder of 28.
Write down 0 as next digit of the result. 
Result so far: 14090.0
The remainder is 28 after subtracting 0 from 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

On to step 7:
42 goes into 280 6 times with a remainder of 28.
Use 6 as the next digit of our solution. 
Result so far: 14090.6
The remainder is 28 after subtracting 252 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Moving on to step 8:
280 divided by 42 is 6 with a remainder of 28.
Put 6 as the next digit of the answer. 
Result so far: 14090.66
Deduct 252 from 280 and we're left with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Our division results in 14090.66 with a remaining 0.028.