We're dividing 428535 by 87 
We want to divide 428535 by 87.

Step 1:
When dividing 4 by 87, we get 0 with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Take the next digit (2) from the dividend and append it to 4, then repeat: 42 / 87

Moving on to step 2:
87 can be fit into 42 0 times, resulting in a remainder of 42.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 42, we end up with 42.
Fetch the next digit (8) from the dividend, attach it to 42 and continue: 428 / 87

Going ahead to step 3:
When dividing 428 by 87, we get 4 with a remainder of 80.
Write down 4 as next digit of the result. 
Result so far: 4.0
Subtracting 348 from 428 leaves us with 80.
Include the next digit (5) from the dividend after 80, then repeat: 805 / 87

Step 4:
The number 87 fits into 805 9 times, leaving a remainder of 22.
The next digit of our result is 9. 
Result so far: 49.0
Subtracting 783 from 805 leaves us with 22.
Bring next digit (3) of the dividend behind the 22 and repeat the process: 223 / 87

Moving on to step 5:
If we divide 223 by 87, we get 2 and a remainder of 49.
Put 2 as the next digit of the answer. 
Result so far: 492.0
If we take 174 away from 223, we end up with 49.
Append the next digit (5) from the dividend to 49 and continue with: 495 / 87

Let's proceed to step 6:
When dividing 495 by 87, we get 5 with a remainder of 60.
The number 5 becomes the next digit in our result. 
Result so far: 4925.0
Subtracting 435 from 495 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 7:
The number 87 fits into 600 6 times, leaving a remainder of 78.
Record the quotient 6 as the next digit in the result. 
Result so far: 4925.6
The remainder is 78 after subtracting 522 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Let's proceed to step 8:
The number 87 fits into 780 8 times, leaving a remainder of 84.
The next digit of our result is 8. 
Result so far: 4925.68
Deduct 696 from 780 and we're left with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Step 9:
87 goes into 840 9 times with a remainder of 57.
Write down 9 as next digit of the result. 
Result so far: 4925.689
If we take 783 away from 840, we end up 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.

Advancing to step 10:
87 goes into 570 6 times with a remainder of 48.
Use 6 as the next digit of our solution. 
Result so far: 4925.6896
Subtracting 522 from 570 leaves us with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Going ahead to step 11:
87 goes into 480 5 times with a remainder of 45.
Put 5 as the next digit of the answer. 
Result so far: 4925.68965
If we subtract 435 from 480, we get 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

On to step 12:
When dividing 450 by 87, we get 5 with a remainder of 15.
Put 5 as the next digit of the answer. 
Result so far: 4925.689655
Subtracting 435 from 450 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

The final result is 4925.689655 with a remainder of 1.5e-06.