We divide 80439 by 42
Let's see how many times 42 fits into 80439.

Let's proceed to step 1:
If we divide 8 by 42, we get 0 and a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Include the next digit (0) from the dividend after 8, then repeat: 80 / 42

Step 2:
The number 42 fits into 80 1 times, leaving a remainder of 38.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 42 from 80 and we're left with 38.
Include the next digit (4) from the dividend after 38, then repeat: 384 / 42

Moving on to step 3:
42 goes into 384 9 times with a remainder of 6.
Put 9 as the next digit of the answer. 
Result so far: 19.0
Subtract 378 from 384 to get 6.
Bring next digit (3) of the dividend behind the 6 and repeat the process: 63 / 42

Let's proceed to step 4:
The number 42 fits into 63 1 times, leaving a remainder of 21.
The next digit of our result is 1. 
Result so far: 191.0
Subtracting 42 from 63 leaves us with 21.
Bring next digit (9) of the dividend behind the 21 and repeat the process: 219 / 42

Going ahead to step 5:
If we divide 219 by 42, we get 5 and a remainder of 9.
Put 5 as the next digit of the answer. 
Result so far: 1915.0
Subtracting 210 from 219 leaves us with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 6:
When dividing 90 by 42, we get 2 with a remainder of 6.
Use 2 as the next digit of our solution. 
Result so far: 1915.2
Subtracting 84 from 90 leaves us 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.

On to step 7:
42 can be fit into 60 1 times, resulting in a remainder of 18.
The number 1 becomes the next digit in our result. 
Result so far: 1915.21
If we subtract 42 from 60, we get 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 8:
42 goes into 180 4 times with a remainder of 12.
Record the quotient 4 as the next digit in the result. 
Result so far: 1915.214
Deduct 168 from 180 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 9:
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: 1915.2142
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 10:
If we divide 360 by 42, we get 8 and a remainder of 24.
Write down 8 as next digit of the result. 
Result so far: 1915.21428
Subtracting 336 from 360 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 11:
The number 42 fits into 240 5 times, leaving a remainder of 30.
Record the quotient 5 as the next digit in the result. 
Result so far: 1915.214285
Subtracting 210 from 240 leaves us 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 12:
42 can be fit into 300 7 times, resulting in a remainder of 6.
Put 7 as the next digit of the answer. 
Result so far: 1915.2142857
The remainder is 6 after subtracting 294 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 13:
60 divided by 42 is 1 with a remainder of 18.
The number 1 becomes the next digit in our result. 
Result so far: 1915.21428571
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.

The final result is 1915.21428571 with a remainder of 1.8e-08.