We're dividing 420021 by 87 
Let's see how many times 87 fits into 420021.

Let's proceed to step 1:
4 divided by 87 is 0 with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Append the next digit (2) from the dividend to 4 and continue with: 42 / 87

Going ahead to step 2:
If we divide 42 by 87, we get 0 and a remainder of 42.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 42 leaves us with 42.
Include the next digit (0) from the dividend after 42, then repeat: 420 / 87

Going ahead to step 3:
420 divided by 87 is 4 with a remainder of 72.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Subtracting 348 from 420 leaves us with 72.
Append the next digit (0) from the dividend to 72 and continue with: 720 / 87

Advancing to step 4:
If we divide 720 by 87, we get 8 and a remainder of 24.
Write down 8 as next digit of the result. 
Result so far: 48.0
If we take 696 away from 720, we end up with 24.
Fetch the next digit (2) from the dividend, attach it to 24 and continue: 242 / 87

Step 5:
87 can be fit into 242 2 times, resulting in a remainder of 68.
Write down 2 as next digit of the result. 
Result so far: 482.0
Subtract 174 from 242 to get 68.
Fetch the next digit (1) from the dividend, attach it to 68 and continue: 681 / 87

Let's proceed to step 6:
If we divide 681 by 87, we get 7 and a remainder of 72.
Record the quotient 7 as the next digit in the result. 
Result so far: 4827.0
Deduct 609 from 681 and we're left with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Advancing to step 7:
The number 87 fits into 720 8 times, leaving a remainder of 24.
Put 8 as the next digit of the answer. 
Result so far: 4827.8
The remainder is 24 after subtracting 696 from 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 8:
If we divide 240 by 87, we get 2 and a remainder of 66.
The next digit of our result is 2. 
Result so far: 4827.82
If we take 174 away from 240, we end up 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.

Advancing to step 9:
The number 87 fits into 660 7 times, leaving a remainder of 51.
Record the quotient 7 as the next digit in the result. 
Result so far: 4827.827
Subtract 609 from 660 to get 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Going ahead to step 10:
87 goes into 510 5 times with a remainder of 75.
Write down 5 as next digit of the result. 
Result so far: 4827.8275
If we take 435 away from 510, we end up with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

On to step 11:
750 divided by 87 is 8 with a remainder of 54.
Put 8 as the next digit of the answer. 
Result so far: 4827.82758
Deduct 696 from 750 and we're left with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

On to step 12:
If we divide 540 by 87, we get 6 and a remainder of 18.
Put 6 as the next digit of the answer. 
Result so far: 4827.827586
Deduct 522 from 540 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 13:
180 divided by 87 is 2 with a remainder of 6.
Write down 2 as next digit of the result. 
Result so far: 4827.8275862
The remainder is 6 after subtracting 174 from 180.
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 14:
87 can be fit into 60 0 times, resulting in a remainder of 60.
The number 0 becomes the next digit in our result. 
Result so far: 4827.8275862
Subtract 0 from 60 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

In conclusion, the division gives 4827.8275862 with a balance of 6e-08.