20817009 ÷ 247 
We want to divide 20817009 by 247.

Moving on to step 1:
If we divide 2 by 247, we get 0 and a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Bring next digit (0) of the dividend behind the 2 and repeat the process: 20 / 247

Step 2:
The number 247 fits into 20 0 times, leaving a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 20 and we're left with 20.
Take the next digit (8) from the dividend and append it to 20, then repeat: 208 / 247

Advancing to step 3:
208 divided by 247 is 0 with a remainder of 208.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 208 after subtracting 0 from 208.
Append the next digit (1) from the dividend to 208 and continue with: 2081 / 247

Step 4:
247 goes into 2081 8 times with a remainder of 105.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
If we take 1976 away from 2081, we end up with 105.
Fetch the next digit (7) from the dividend, attach it to 105 and continue: 1057 / 247

On to step 5:
When dividing 1057 by 247, we get 4 with a remainder of 69.
Use 4 as the next digit of our solution. 
Result so far: 84.0
Subtracting 988 from 1057 leaves us with 69.
Bring next digit (0) of the dividend behind the 69 and repeat the process: 690 / 247

Let's proceed to step 6:
If we divide 690 by 247, we get 2 and a remainder of 196.
Write down 2 as next digit of the result. 
Result so far: 842.0
Subtract 494 from 690 to get 196.
Append the next digit (0) from the dividend to 196 and continue with: 1960 / 247

Going ahead to step 7:
247 goes into 1960 7 times with a remainder of 231.
Use 7 as the next digit of our solution. 
Result so far: 8427.0
If we subtract 1729 from 1960, we get 231.
Include the next digit (9) from the dividend after 231, then repeat: 2319 / 247

Going ahead to step 8:
247 goes into 2319 9 times with a remainder of 96.
Put 9 as the next digit of the answer. 
Result so far: 84279.0
If we subtract 2223 from 2319, we get 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

On to step 9:
247 can be fit into 960 3 times, resulting in a remainder of 219.
Use 3 as the next digit of our solution. 
Result so far: 84279.3
If we take 741 away from 960, we end up with 219.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2190, and continue the process.

Let's proceed to step 10:
247 can be fit into 2190 8 times, resulting in a remainder of 214.
Write down 8 as next digit of the result. 
Result so far: 84279.38
Subtracting 1976 from 2190 leaves us with 214.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2140, and continue the process.

Let's proceed to step 11:
When dividing 2140 by 247, we get 8 with a remainder of 164.
The next digit of our result is 8. 
Result so far: 84279.388
If we take 1976 away from 2140, we end up with 164.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1640, and continue the process.

The final outcome is 84279.388, with a leftover of 0.0164.