421088 divided by 86 
Let's see how many times 86 fits into 421088.

Advancing to step 1:
4 divided by 86 is 0 with a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Grab the next digit (2) from the dividend, add it to 4, then carry on: 42 / 86

Step 2:
If we divide 42 by 86, we get 0 and a remainder of 42.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 42, we get 42.
Grab the next digit (1) from the dividend, add it to 42, then carry on: 421 / 86

Moving on to step 3:
86 goes into 421 4 times with a remainder of 77.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Deduct 344 from 421 and we're left with 77.
Append the next digit (0) from the dividend to 77 and continue with: 770 / 86

Let's proceed to step 4:
When dividing 770 by 86, we get 8 with a remainder of 82.
The number 8 becomes the next digit in our result. 
Result so far: 48.0
Subtracting 688 from 770 leaves us with 82.
Bring next digit (8) of the dividend behind the 82 and repeat the process: 828 / 86

Step 5:
If we divide 828 by 86, we get 9 and a remainder of 54.
The next digit of our result is 9. 
Result so far: 489.0
Deduct 774 from 828 and we're left with 54.
Take the next digit (8) from the dividend and append it to 54, then repeat: 548 / 86

Advancing to step 6:
548 divided by 86 is 6 with a remainder of 32.
The number 6 becomes the next digit in our result. 
Result so far: 4896.0
Deduct 516 from 548 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 7:
When dividing 320 by 86, we get 3 with a remainder of 62.
Record the quotient 3 as the next digit in the result. 
Result so far: 4896.3
Deduct 258 from 320 and we're left with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Moving on to step 8:
620 divided by 86 is 7 with a remainder of 18.
Record the quotient 7 as the next digit in the result. 
Result so far: 4896.37
Subtract 602 from 620 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 9:
86 goes into 180 2 times with a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 4896.372
The remainder is 8 after subtracting 172 from 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 10:
The number 86 fits into 80 0 times, leaving a remainder of 80.
Put 0 as the next digit of the answer. 
Result so far: 4896.372
Subtracting 0 from 80 leaves us 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 11:
The number 86 fits into 800 9 times, leaving a remainder of 26.
Write down 9 as next digit of the result. 
Result so far: 4896.37209
If we subtract 774 from 800, we get 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 12:
The number 86 fits into 260 3 times, leaving a remainder of 2.
Record the quotient 3 as the next digit in the result. 
Result so far: 4896.372093
Subtracting 258 from 260 leaves us 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.

Advancing to step 13:
86 can be fit into 20 0 times, resulting in a remainder of 20.
The next digit of our result is 0. 
Result so far: 4896.372093
Subtracting 0 from 20 leaves us 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 14:
The number 86 fits into 200 2 times, leaving a remainder of 28.
The number 2 becomes the next digit in our result. 
Result so far: 4896.37209302
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.

The quotient of the division is 4896.37209302, and the remainder is 2.8e-08.