20247621 ÷ 864 
We want to figure out the number of times 20247621 can be divided by 864.

Advancing to step 1:
864 goes into 2 0 times with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Include the next digit (0) from the dividend after 2, then repeat: 20 / 864

Let's proceed to step 2:
864 goes into 20 0 times with a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 20 after subtracting 0 from 20.
Take the next digit (2) from the dividend and append it to 20, then repeat: 202 / 864

Step 3:
If we divide 202 by 864, we get 0 and a remainder of 202.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 202 to get 202.
Bring next digit (4) of the dividend behind the 202 and repeat the process: 2024 / 864

Moving on to step 4:
864 goes into 2024 2 times with a remainder of 296.
The next digit of our result is 2. 
Result so far: 2.0
Subtract 1728 from 2024 to get 296.
Append the next digit (7) from the dividend to 296 and continue with: 2967 / 864

Let's proceed to step 5:
864 can be fit into 2967 3 times, resulting in a remainder of 375.
Use 3 as the next digit of our solution. 
Result so far: 23.0
Subtracting 2592 from 2967 leaves us with 375.
Include the next digit (6) from the dividend after 375, then repeat: 3756 / 864

Going ahead to step 6:
864 can be fit into 3756 4 times, resulting in a remainder of 300.
The number 4 becomes the next digit in our result. 
Result so far: 234.0
The remainder is 300 after subtracting 3456 from 3756.
Take the next digit (2) from the dividend and append it to 300, then repeat: 3002 / 864

Going ahead to step 7:
When dividing 3002 by 864, we get 3 with a remainder of 410.
Write down 3 as next digit of the result. 
Result so far: 2343.0
If we subtract 2592 from 3002, we get 410.
Bring next digit (1) of the dividend behind the 410 and repeat the process: 4101 / 864

Step 8:
864 can be fit into 4101 4 times, resulting in a remainder of 645.
The next digit of our result is 4. 
Result so far: 23434.0
Subtracting 3456 from 4101 leaves us with 645.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6450, and continue the process.

Moving on to step 9:
864 can be fit into 6450 7 times, resulting in a remainder of 402.
Put 7 as the next digit of the answer. 
Result so far: 23434.7
Deduct 6048 from 6450 and we're left with 402.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4020, and continue the process.

Step 10:
If we divide 4020 by 864, we get 4 and a remainder of 564.
Write down 4 as next digit of the result. 
Result so far: 23434.74
Deduct 3456 from 4020 and we're left with 564.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5640, and continue the process.

On to step 11:
The number 864 fits into 5640 6 times, leaving a remainder of 456.
The number 6 becomes the next digit in our result. 
Result so far: 23434.746
The remainder is 456 after subtracting 5184 from 5640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4560, and continue the process.

On to step 12:
When dividing 4560 by 864, we get 5 with a remainder of 240.
The next digit of our result is 5. 
Result so far: 23434.7465
Subtracting 4320 from 4560 leaves us with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Advancing to step 13:
2400 divided by 864 is 2 with a remainder of 672.
Record the quotient 2 as the next digit in the result. 
Result so far: 23434.74652
If we subtract 1728 from 2400, we get 672.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6720, and continue the process.

On to step 14:
864 can be fit into 6720 7 times, resulting in a remainder of 672.
The number 7 becomes the next digit in our result. 
Result so far: 23434.746527
If we subtract 6048 from 6720, we get 672.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6720, and continue the process.

Going ahead to step 15:
864 goes into 6720 7 times with a remainder of 672.
The number 7 becomes the next digit in our result. 
Result so far: 23434.7465277
Subtract 6048 from 6720 to get 672.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6720, and continue the process.

The final result is 23434.7465277 with a remainder of 6.72e-06.