We look at the division of 42015 by 79 
We want to divide 42015 by 79.

Let's proceed to step 1:
4 divided by 79 is 0 with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Append the next digit (2) from the dividend to 4 and continue with: 42 / 79

Moving on to step 2:
79 goes into 42 0 times with a remainder of 42.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 42, we get 42.
Include the next digit (0) from the dividend after 42, then repeat: 420 / 79

Step 3:
The number 79 fits into 420 5 times, leaving a remainder of 25.
Put 5 as the next digit of the answer. 
Result so far: 5.0
If we subtract 395 from 420, we get 25.
Grab the next digit (1) from the dividend, add it to 25, then carry on: 251 / 79

Step 4:
79 goes into 251 3 times with a remainder of 14.
Write down 3 as next digit of the result. 
Result so far: 53.0
If we take 237 away from 251, we end up with 14.
Fetch the next digit (5) from the dividend, attach it to 14 and continue: 145 / 79

Step 5:
If we divide 145 by 79, we get 1 and a remainder of 66.
The next digit of our result is 1. 
Result so far: 531.0
Subtracting 79 from 145 leaves us with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Going ahead to step 6:
79 can be fit into 660 8 times, resulting in a remainder of 28.
Use 8 as the next digit of our solution. 
Result so far: 531.8
If we subtract 632 from 660, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Step 7:
280 divided by 79 is 3 with a remainder of 43.
The number 3 becomes the next digit in our result. 
Result so far: 531.83
If we subtract 237 from 280, we get 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Advancing to step 8:
430 divided by 79 is 5 with a remainder of 35.
Use 5 as the next digit of our solution. 
Result so far: 531.835
The remainder is 35 after subtracting 395 from 430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

On to step 9:
The number 79 fits into 350 4 times, leaving a remainder of 34.
Put 4 as the next digit of the answer. 
Result so far: 531.8354
If we subtract 316 from 350, we get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Step 10:
340 divided by 79 is 4 with a remainder of 24.
Record the quotient 4 as the next digit in the result. 
Result so far: 531.83544
If we take 316 away from 340, we end up 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.

Our division results in 531.83544 with a remaining 2.4e-05.