We're dividing 19885292 by 864 
We want to figure out the number of times 19885292 can be divided by 864.

On to step 1:
When dividing 1 by 864, we get 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Include the next digit (9) from the dividend after 1, then repeat: 19 / 864

On to step 2:
19 divided by 864 is 0 with a remainder of 19.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 19 after subtracting 0 from 19.
Take the next digit (8) from the dividend and append it to 19, then repeat: 198 / 864

On to step 3:
When dividing 198 by 864, we get 0 with a remainder of 198.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 198 and we're left with 198.
Include the next digit (8) from the dividend after 198, then repeat: 1988 / 864

Advancing to step 4:
The number 864 fits into 1988 2 times, leaving a remainder of 260.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we subtract 1728 from 1988, we get 260.
Bring next digit (5) of the dividend behind the 260 and repeat the process: 2605 / 864

Step 5:
864 can be fit into 2605 3 times, resulting in a remainder of 13.
The number 3 becomes the next digit in our result. 
Result so far: 23.0
The remainder is 13 after subtracting 2592 from 2605.
Append the next digit (2) from the dividend to 13 and continue with: 132 / 864

Advancing to step 6:
864 can be fit into 132 0 times, resulting in a remainder of 132.
Write down 0 as next digit of the result. 
Result so far: 230.0
If we subtract 0 from 132, we get 132.
Append the next digit (9) from the dividend to 132 and continue with: 1329 / 864

Moving on to step 7:
864 goes into 1329 1 times with a remainder of 465.
The next digit of our result is 1. 
Result so far: 2301.0
Deduct 864 from 1329 and we're left with 465.
Take the next digit (2) from the dividend and append it to 465, then repeat: 4652 / 864

On to step 8:
4652 divided by 864 is 5 with a remainder of 332.
Record the quotient 5 as the next digit in the result. 
Result so far: 23015.0
Subtracting 4320 from 4652 leaves us with 332.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3320, and continue the process.

Advancing to step 9:
864 can be fit into 3320 3 times, resulting in a remainder of 728.
The next digit of our result is 3. 
Result so far: 23015.3
Subtracting 2592 from 3320 leaves us with 728.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7280, and continue the process.

Step 10:
864 can be fit into 7280 8 times, resulting in a remainder of 368.
The next digit of our result is 8. 
Result so far: 23015.38
Subtract 6912 from 7280 to get 368.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3680, and continue the process.

Let's proceed to step 11:
The number 864 fits into 3680 4 times, leaving a remainder of 224.
Record the quotient 4 as the next digit in the result. 
Result so far: 23015.384
The remainder is 224 after subtracting 3456 from 3680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2240, and continue the process.

Advancing to step 12:
864 goes into 2240 2 times with a remainder of 512.
Write down 2 as next digit of the result. 
Result so far: 23015.3842
If we subtract 1728 from 2240, we get 512.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5120, and continue the process.

On to step 13:
The number 864 fits into 5120 5 times, leaving a remainder of 800.
The next digit of our result is 5. 
Result so far: 23015.38425
If we take 4320 away from 5120, we end up with 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8000, and continue the process.

Let's proceed to step 14:
If we divide 8000 by 864, we get 9 and a remainder of 224.
Write down 9 as next digit of the result. 
Result so far: 23015.384259
If we subtract 7776 from 8000, we get 224.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2240, and continue the process.

Let's proceed to step 15:
If we divide 2240 by 864, we get 2 and a remainder of 512.
Put 2 as the next digit of the answer. 
Result so far: 23015.3842592
Subtract 1728 from 2240 to get 512.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5120, and continue the process.

Advancing to step 16:
When dividing 5120 by 864, we get 5 with a remainder of 800.
Put 5 as the next digit of the answer. 
Result so far: 23015.38425925
If we take 4320 away from 5120, we end up with 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8000, and continue the process.

The final result is 23015.38425925 with a remainder of 8e-07.