We look at the division of 420284 by 86 
Our goal is to divide 420284 by 86.

On to step 1:
If we divide 4 by 86, we get 0 and a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Take the next digit (2) from the dividend and append it to 4, then repeat: 42 / 86

Step 2:
The number 86 fits into 42 0 times, leaving a remainder of 42.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 42 after subtracting 0 from 42.
Append the next digit (0) from the dividend to 42 and continue with: 420 / 86

Moving on to step 3:
When dividing 420 by 86, we get 4 with a remainder of 76.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Subtracting 344 from 420 leaves us with 76.
Bring next digit (2) of the dividend behind the 76 and repeat the process: 762 / 86

Step 4:
If we divide 762 by 86, we get 8 and a remainder of 74.
The next digit of our result is 8. 
Result so far: 48.0
Subtract 688 from 762 to get 74.
Fetch the next digit (8) from the dividend, attach it to 74 and continue: 748 / 86

Let's proceed to step 5:
86 can be fit into 748 8 times, resulting in a remainder of 60.
Use 8 as the next digit of our solution. 
Result so far: 488.0
Deduct 688 from 748 and we're left with 60.
Grab the next digit (4) from the dividend, add it to 60, then carry on: 604 / 86

On to step 6:
604 divided by 86 is 7 with a remainder of 2.
The next digit of our result is 7. 
Result so far: 4887.0
The remainder is 2 after subtracting 602 from 604.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 7:
When dividing 20 by 86, we get 0 with a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 4887.0
If we take 0 away from 20, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 8:
200 divided by 86 is 2 with a remainder of 28.
Use 2 as the next digit of our solution. 
Result so far: 4887.02
The remainder is 28 after subtracting 172 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

On to step 9:
86 goes into 280 3 times with a remainder of 22.
Put 3 as the next digit of the answer. 
Result so far: 4887.023
The remainder is 22 after subtracting 258 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Step 10:
220 divided by 86 is 2 with a remainder of 48.
Put 2 as the next digit of the answer. 
Result so far: 4887.0232
If we take 172 away from 220, we end up 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.

On to step 11:
86 can be fit into 480 5 times, resulting in a remainder of 50.
Use 5 as the next digit of our solution. 
Result so far: 4887.02325
If we subtract 430 from 480, 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 12:
86 can be fit into 500 5 times, resulting in a remainder of 70.
Use 5 as the next digit of our solution. 
Result so far: 4887.023255
If we subtract 430 from 500, we get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

The quotient of the division is 4887.023255, and the remainder is 7e-06.