42086 ÷ 79 
Our goal is to divide 42086 by 79.

Advancing to step 1:
79 goes into 4 0 times with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Include the next digit (2) from the dividend after 4, then repeat: 42 / 79

Let's proceed to step 2:
42 divided by 79 is 0 with a remainder of 42.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 42 to get 42.
Fetch the next digit (0) from the dividend, attach it to 42 and continue: 420 / 79

Going ahead to step 3:
If we divide 420 by 79, we get 5 and a remainder of 25.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
Deduct 395 from 420 and we're left with 25.
Grab the next digit (8) from the dividend, add it to 25, then carry on: 258 / 79

Advancing to step 4:
258 divided by 79 is 3 with a remainder of 21.
The next digit of our result is 3. 
Result so far: 53.0
If we subtract 237 from 258, we get 21.
Take the next digit (6) from the dividend and append it to 21, then repeat: 216 / 79

Going ahead to step 5:
216 divided by 79 is 2 with a remainder of 58.
The number 2 becomes the next digit in our result. 
Result so far: 532.0
If we subtract 158 from 216, we get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Advancing to step 6:
79 goes into 580 7 times with a remainder of 27.
The number 7 becomes the next digit in our result. 
Result so far: 532.7
Subtract 553 from 580 to get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Advancing to step 7:
When dividing 270 by 79, we get 3 with a remainder of 33.
The next digit of our result is 3. 
Result so far: 532.73
If we subtract 237 from 270, we get 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Going ahead to step 8:
79 can be fit into 330 4 times, resulting in a remainder of 14.
Use 4 as the next digit of our solution. 
Result so far: 532.734
Deduct 316 from 330 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.

Going ahead to step 9:
If we divide 140 by 79, we get 1 and a remainder of 61.
The number 1 becomes the next digit in our result. 
Result so far: 532.7341
If we subtract 79 from 140, we get 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Going ahead to step 10:
79 goes into 610 7 times with a remainder of 57.
Use 7 as the next digit of our solution. 
Result so far: 532.73417
Subtracting 553 from 610 leaves us with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Let's proceed to step 11:
If we divide 570 by 79, we get 7 and a remainder of 17.
The next digit of our result is 7. 
Result so far: 532.734177
Subtracting 553 from 570 leaves us with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Our division results in 532.734177 with a remaining 1.7e-06.