Let's divide 420430 by 86
We want to figure out the number of times 420430 can be divided by 86.

Moving on to step 1:
86 can be fit into 4 0 times, resulting in a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Grab the next digit (2) from the dividend, add it to 4, then carry on: 42 / 86

Going ahead to step 2:
The number 86 fits into 42 0 times, leaving a remainder of 42.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 42 and we're left with 42.
Append the next digit (0) from the dividend to 42 and continue with: 420 / 86

Moving on to step 3:
If we divide 420 by 86, we get 4 and a remainder of 76.
Write down 4 as next digit of the result. 
Result so far: 4.0
Subtracting 344 from 420 leaves us with 76.
Include the next digit (4) from the dividend after 76, then repeat: 764 / 86

Going ahead to step 4:
The number 86 fits into 764 8 times, leaving a remainder of 76.
Record the quotient 8 as the next digit in the result. 
Result so far: 48.0
Subtract 688 from 764 to get 76.
Bring next digit (3) of the dividend behind the 76 and repeat the process: 763 / 86

Advancing to step 5:
When dividing 763 by 86, we get 8 with a remainder of 75.
Use 8 as the next digit of our solution. 
Result so far: 488.0
Deduct 688 from 763 and we're left with 75.
Fetch the next digit (0) from the dividend, attach it to 75 and continue: 750 / 86

Step 6:
750 divided by 86 is 8 with a remainder of 62.
Record the quotient 8 as the next digit in the result. 
Result so far: 4888.0
The remainder is 62 after subtracting 688 from 750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Step 7:
The number 86 fits into 620 7 times, leaving a remainder of 18.
Record the quotient 7 as the next digit in the result. 
Result so far: 4888.7
Deduct 602 from 620 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 8:
When dividing 180 by 86, we get 2 with a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 4888.72
If we take 172 away from 180, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 9:
80 divided by 86 is 0 with a remainder of 80.
Use 0 as the next digit of our solution. 
Result so far: 4888.72
If we take 0 away from 80, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 10:
The number 86 fits into 800 9 times, leaving a remainder of 26.
Record the quotient 9 as the next digit in the result. 
Result so far: 4888.7209
Subtracting 774 from 800 leaves us with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Advancing to step 11:
When dividing 260 by 86, we get 3 with a remainder of 2.
Use 3 as the next digit of our solution. 
Result so far: 4888.72093
If we take 258 away from 260, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 12:
86 can be fit into 20 0 times, resulting in a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 4888.72093
Deduct 0 from 20 and we're left 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.

On to step 13:
When dividing 200 by 86, we get 2 with a remainder of 28.
Write down 2 as next digit of the result. 
Result so far: 4888.7209302
Subtracting 172 from 200 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Moving on to step 14:
280 divided by 86 is 3 with a remainder of 22.
Write down 3 as next digit of the result. 
Result so far: 4888.72093023
If we take 258 away from 280, we end up with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Our division results in 4888.72093023 with a remaining 2.2e-08.