424391 ÷ 87 
Our goal is to divide 424391 by 87.

Advancing to step 1:
87 can be fit into 4 0 times, resulting in a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Bring next digit (2) of the dividend behind the 4 and repeat the process: 42 / 87

Let's proceed to step 2:
If we divide 42 by 87, we get 0 and a remainder of 42.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 42 to get 42.
Take the next digit (4) from the dividend and append it to 42, then repeat: 424 / 87

Advancing to step 3:
When dividing 424 by 87, we get 4 with a remainder of 76.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
If we subtract 348 from 424, we get 76.
Include the next digit (3) from the dividend after 76, then repeat: 763 / 87

Going ahead to step 4:
If we divide 763 by 87, we get 8 and a remainder of 67.
The number 8 becomes the next digit in our result. 
Result so far: 48.0
The remainder is 67 after subtracting 696 from 763.
Take the next digit (9) from the dividend and append it to 67, then repeat: 679 / 87

Advancing to step 5:
87 can be fit into 679 7 times, resulting in a remainder of 70.
Put 7 as the next digit of the answer. 
Result so far: 487.0
Subtracting 609 from 679 leaves us with 70.
Fetch the next digit (1) from the dividend, attach it to 70 and continue: 701 / 87

Advancing to step 6:
87 can be fit into 701 8 times, resulting in a remainder of 5.
Write down 8 as next digit of the result. 
Result so far: 4878.0
Deduct 696 from 701 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 7:
87 goes into 50 0 times with a remainder of 50.
The number 0 becomes the next digit in our result. 
Result so far: 4878.0
If we subtract 0 from 50, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 8:
87 can be fit into 500 5 times, resulting in a remainder of 65.
The number 5 becomes the next digit in our result. 
Result so far: 4878.05
Subtract 435 from 500 to get 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Advancing to step 9:
When dividing 650 by 87, we get 7 with a remainder of 41.
The number 7 becomes the next digit in our result. 
Result so far: 4878.057
The remainder is 41 after subtracting 609 from 650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Moving on to step 10:
If we divide 410 by 87, we get 4 and a remainder of 62.
Put 4 as the next digit of the answer. 
Result so far: 4878.0574
If we subtract 348 from 410, we get 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Advancing to step 11:
The number 87 fits into 620 7 times, leaving a remainder of 11.
Use 7 as the next digit of our solution. 
Result so far: 4878.05747
Subtract 609 from 620 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

On to step 12:
If we divide 110 by 87, we get 1 and a remainder of 23.
The next digit of our result is 1. 
Result so far: 4878.057471
The remainder is 23 after subtracting 87 from 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Step 13:
87 can be fit into 230 2 times, resulting in a remainder of 56.
Use 2 as the next digit of our solution. 
Result so far: 4878.0574712
Deduct 174 from 230 and we're left with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Going ahead to step 14:
87 goes into 560 6 times with a remainder of 38.
Put 6 as the next digit of the answer. 
Result so far: 4878.05747126
If we subtract 522 from 560, we get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Our division results in 4878.05747126 with a remaining 3.8e-08.