Let's divide 8578391 by 486
Let's see how many times 486 fits into 8578391.

Let's proceed to step 1:
486 can be fit into 8 0 times, resulting in a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Grab the next digit (5) from the dividend, add it to 8, then carry on: 85 / 486

Advancing to step 2:
The number 486 fits into 85 0 times, leaving a remainder of 85.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 85, we get 85.
Grab the next digit (7) from the dividend, add it to 85, then carry on: 857 / 486

On to step 3:
If we divide 857 by 486, we get 1 and a remainder of 371.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 486 away from 857, we end up with 371.
Grab the next digit (8) from the dividend, add it to 371, then carry on: 3718 / 486

Going ahead to step 4:
486 goes into 3718 7 times with a remainder of 316.
Write down 7 as next digit of the result. 
Result so far: 17.0
The remainder is 316 after subtracting 3402 from 3718.
Include the next digit (3) from the dividend after 316, then repeat: 3163 / 486

Step 5:
If we divide 3163 by 486, we get 6 and a remainder of 247.
Put 6 as the next digit of the answer. 
Result so far: 176.0
Deduct 2916 from 3163 and we're left with 247.
Bring next digit (9) of the dividend behind the 247 and repeat the process: 2479 / 486

Moving on to step 6:
When dividing 2479 by 486, we get 5 with a remainder of 49.
Put 5 as the next digit of the answer. 
Result so far: 1765.0
Deduct 2430 from 2479 and we're left with 49.
Append the next digit (1) from the dividend to 49 and continue with: 491 / 486

On to step 7:
486 goes into 491 1 times with a remainder of 5.
Write down 1 as next digit of the result. 
Result so far: 17651.0
If we subtract 486 from 491, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 8:
If we divide 50 by 486, we get 0 and a remainder of 50.
The next digit of our result is 0. 
Result so far: 17651.0
If we subtract 0 from 50, 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.

Step 9:
486 can be fit into 500 1 times, resulting in a remainder of 14.
Put 1 as the next digit of the answer. 
Result so far: 17651.01
Subtracting 486 from 500 leaves us with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Advancing to step 10:
If we divide 140 by 486, we get 0 and a remainder of 140.
The next digit of our result is 0. 
Result so far: 17651.01
If we take 0 away from 140, we end up with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Going ahead to step 11:
If we divide 1400 by 486, we get 2 and a remainder of 428.
Record the quotient 2 as the next digit in the result. 
Result so far: 17651.0102
Subtract 972 from 1400 to get 428.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4280, and continue the process.

On to step 12:
If we divide 4280 by 486, we get 8 and a remainder of 392.
Use 8 as the next digit of our solution. 
Result so far: 17651.01028
The remainder is 392 after subtracting 3888 from 4280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

Step 13:
486 can be fit into 3920 8 times, resulting in a remainder of 32.
Write down 8 as next digit of the result. 
Result so far: 17651.010288
If we subtract 3888 from 3920, we get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

In conclusion, the division gives 17651.010288 with a balance of 3.2e-06.