We're dividing 543804 by 42 
Our goal is to divide 543804 by 42.

On to step 1:
The number 42 fits into 5 0 times, leaving a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Grab the next digit (4) from the dividend, add it to 5, then carry on: 54 / 42

Step 2:
If we divide 54 by 42, we get 1 and a remainder of 12.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 42 from 54 and we're left with 12.
Grab the next digit (3) from the dividend, add it to 12, then carry on: 123 / 42

On to step 3:
123 divided by 42 is 2 with a remainder of 39.
The next digit of our result is 2. 
Result so far: 12.0
Subtracting 84 from 123 leaves us with 39.
Bring next digit (8) of the dividend behind the 39 and repeat the process: 398 / 42

Going ahead to step 4:
The number 42 fits into 398 9 times, leaving a remainder of 20.
Put 9 as the next digit of the answer. 
Result so far: 129.0
The remainder is 20 after subtracting 378 from 398.
Append the next digit (0) from the dividend to 20 and continue with: 200 / 42

On to step 5:
When dividing 200 by 42, we get 4 with a remainder of 32.
The next digit of our result is 4. 
Result so far: 1294.0
Subtract 168 from 200 to get 32.
Fetch the next digit (4) from the dividend, attach it to 32 and continue: 324 / 42

Let's proceed to step 6:
324 divided by 42 is 7 with a remainder of 30.
The next digit of our result is 7. 
Result so far: 12947.0
If we take 294 away from 324, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 7:
42 goes into 300 7 times with a remainder of 6.
Put 7 as the next digit of the answer. 
Result so far: 12947.7
Subtract 294 from 300 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 8:
If we divide 60 by 42, we get 1 and a remainder of 18.
Write down 1 as next digit of the result. 
Result so far: 12947.71
Deduct 42 from 60 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 9:
When dividing 180 by 42, we get 4 with a remainder of 12.
Use 4 as the next digit of our solution. 
Result so far: 12947.714
Subtract 168 from 180 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 10:
120 divided by 42 is 2 with a remainder of 36.
Record the quotient 2 as the next digit in the result. 
Result so far: 12947.7142
The remainder is 36 after subtracting 84 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Let's proceed to step 11:
When dividing 360 by 42, we get 8 with a remainder of 24.
Record the quotient 8 as the next digit in the result. 
Result so far: 12947.71428
If we subtract 336 from 360, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 12:
If we divide 240 by 42, we get 5 and a remainder of 30.
The number 5 becomes the next digit in our result. 
Result so far: 12947.714285
Subtract 210 from 240 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 13:
42 goes into 300 7 times with a remainder of 6.
Write down 7 as next digit of the result. 
Result so far: 12947.7142857
Deduct 294 from 300 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 14:
If we divide 60 by 42, we get 1 and a remainder of 18.
Write down 1 as next digit of the result. 
Result so far: 12947.71428571
The remainder is 18 after subtracting 42 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Our division results in 12947.71428571 with a remaining 1.8e-08.