We divide 10239509 by 486
Let's see how many times 486 fits into 10239509.

Moving on to step 1:
1 divided by 486 is 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Append the next digit (0) from the dividend to 1 and continue with: 10 / 486

Step 2:
10 divided by 486 is 0 with a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 10 leaves us with 10.
Bring next digit (2) of the dividend behind the 10 and repeat the process: 102 / 486

Advancing to step 3:
486 goes into 102 0 times with a remainder of 102.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 102 to get 102.
Take the next digit (3) from the dividend and append it to 102, then repeat: 1023 / 486

Going ahead to step 4:
When dividing 1023 by 486, we get 2 with a remainder of 51.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we subtract 972 from 1023, we get 51.
Grab the next digit (9) from the dividend, add it to 51, then carry on: 519 / 486

Moving on to step 5:
When dividing 519 by 486, we get 1 with a remainder of 33.
Put 1 as the next digit of the answer. 
Result so far: 21.0
If we take 486 away from 519, we end up with 33.
Take the next digit (5) from the dividend and append it to 33, then repeat: 335 / 486

Advancing to step 6:
335 divided by 486 is 0 with a remainder of 335.
The next digit of our result is 0. 
Result so far: 210.0
If we take 0 away from 335, we end up with 335.
Bring next digit (0) of the dividend behind the 335 and repeat the process: 3350 / 486

Going ahead to step 7:
3350 divided by 486 is 6 with a remainder of 434.
Record the quotient 6 as the next digit in the result. 
Result so far: 2106.0
If we subtract 2916 from 3350, we get 434.
Append the next digit (9) from the dividend to 434 and continue with: 4349 / 486

Step 8:
486 can be fit into 4349 8 times, resulting in a remainder of 461.
Record the quotient 8 as the next digit in the result. 
Result so far: 21068.0
Subtracting 3888 from 4349 leaves us with 461.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4610, and continue the process.

On to step 9:
4610 divided by 486 is 9 with a remainder of 236.
Write down 9 as next digit of the result. 
Result so far: 21068.9
Subtracting 4374 from 4610 leaves us with 236.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2360, and continue the process.

Let's proceed to step 10:
When dividing 2360 by 486, we get 4 with a remainder of 416.
Write down 4 as next digit of the result. 
Result so far: 21068.94
Subtracting 1944 from 2360 leaves us with 416.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4160, and continue the process.

Step 11:
When dividing 4160 by 486, we get 8 with a remainder of 272.
Write down 8 as next digit of the result. 
Result so far: 21068.948
If we subtract 3888 from 4160, we get 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

Step 12:
486 goes into 2720 5 times with a remainder of 290.
Put 5 as the next digit of the answer. 
Result so far: 21068.9485
The remainder is 290 after subtracting 2430 from 2720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

Advancing to step 13:
486 can be fit into 2900 5 times, resulting in a remainder of 470.
Write down 5 as next digit of the result. 
Result so far: 21068.94855
If we take 2430 away from 2900, we end up with 470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4700, and continue the process.

The final result is 21068.94855 with a remainder of 0.00047.