We divide 525434 by 42
Our goal is to divide 525434 by 42.

Advancing to step 1:
The number 42 fits into 5 0 times, leaving a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Grab the next digit (2) from the dividend, add it to 5, then carry on: 52 / 42

On to step 2:
If we divide 52 by 42, we get 1 and a remainder of 10.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 42 from 52 and we're left with 10.
Take the next digit (5) from the dividend and append it to 10, then repeat: 105 / 42

Advancing to step 3:
When dividing 105 by 42, we get 2 with a remainder of 21.
The next digit of our result is 2. 
Result so far: 12.0
If we subtract 84 from 105, we get 21.
Bring next digit (4) of the dividend behind the 21 and repeat the process: 214 / 42

Step 4:
42 goes into 214 5 times with a remainder of 4.
The number 5 becomes the next digit in our result. 
Result so far: 125.0
Subtracting 210 from 214 leaves us with 4.
Grab the next digit (3) from the dividend, add it to 4, then carry on: 43 / 42

Step 5:
The number 42 fits into 43 1 times, leaving a remainder of 1.
Record the quotient 1 as the next digit in the result. 
Result so far: 1251.0
The remainder is 1 after subtracting 42 from 43.
Grab the next digit (4) from the dividend, add it to 1, then carry on: 14 / 42

Let's proceed to step 6:
The number 42 fits into 14 0 times, leaving a remainder of 14.
Record the quotient 0 as the next digit in the result. 
Result so far: 12510.0
Subtract 0 from 14 to 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.

Going ahead to step 7:
42 goes into 140 3 times with a remainder of 14.
Put 3 as the next digit of the answer. 
Result so far: 12510.3
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.

Let's proceed to step 8:
When dividing 140 by 42, we get 3 with a remainder of 14.
The next digit of our result is 3. 
Result so far: 12510.33
The remainder is 14 after subtracting 126 from 140.
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 outcome is 12510.33, with a leftover of 0.014.