We divide 175271 by 42
We want to figure out the number of times 175271 can be divided by 42.

Moving on to step 1:
When dividing 1 by 42, we get 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Fetch the next digit (7) from the dividend, attach it to 1 and continue: 17 / 42

On to step 2:
42 goes into 17 0 times with a remainder of 17.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 17 to get 17.
Fetch the next digit (5) from the dividend, attach it to 17 and continue: 175 / 42

Step 3:
If we divide 175 by 42, we get 4 and a remainder of 7.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Deduct 168 from 175 and we're left with 7.
Bring next digit (2) of the dividend behind the 7 and repeat the process: 72 / 42

Step 4:
72 divided by 42 is 1 with a remainder of 30.
Write down 1 as next digit of the result. 
Result so far: 41.0
Subtracting 42 from 72 leaves us with 30.
Take the next digit (7) from the dividend and append it to 30, then repeat: 307 / 42

On to step 5:
42 goes into 307 7 times with a remainder of 13.
Put 7 as the next digit of the answer. 
Result so far: 417.0
Subtract 294 from 307 to get 13.
Append the next digit (1) from the dividend to 13 and continue with: 131 / 42

Step 6:
The number 42 fits into 131 3 times, leaving a remainder of 5.
Write down 3 as next digit of the result. 
Result so far: 4173.0
Subtract 126 from 131 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 7:
42 can be fit into 50 1 times, resulting in a remainder of 8.
Write down 1 as next digit of the result. 
Result so far: 4173.1
Subtract 42 from 50 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 8:
80 divided by 42 is 1 with a remainder of 38.
The next digit of our result is 1. 
Result so far: 4173.11
Subtract 42 from 80 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

The final outcome is 4173.11, with a leftover of 0.038.