We're dividing 55817904 by 864 
We want to figure out the number of times 55817904 can be divided by 864.

Advancing to step 1:
864 goes into 5 0 times with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Append the next digit (5) from the dividend to 5 and continue with: 55 / 864

Moving on to step 2:
864 goes into 55 0 times with a remainder of 55.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 55 and we're left with 55.
Take the next digit (8) from the dividend and append it to 55, then repeat: 558 / 864

Step 3:
864 can be fit into 558 0 times, resulting in a remainder of 558.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 558 leaves us with 558.
Include the next digit (1) from the dividend after 558, then repeat: 5581 / 864

Let's proceed to step 4:
5581 divided by 864 is 6 with a remainder of 397.
Write down 6 as next digit of the result. 
Result so far: 6.0
Deduct 5184 from 5581 and we're left with 397.
Take the next digit (7) from the dividend and append it to 397, then repeat: 3977 / 864

Moving on to step 5:
864 goes into 3977 4 times with a remainder of 521.
The number 4 becomes the next digit in our result. 
Result so far: 64.0
The remainder is 521 after subtracting 3456 from 3977.
Fetch the next digit (9) from the dividend, attach it to 521 and continue: 5219 / 864

Let's proceed to step 6:
The number 864 fits into 5219 6 times, leaving a remainder of 35.
Record the quotient 6 as the next digit in the result. 
Result so far: 646.0
If we take 5184 away from 5219, we end up with 35.
Append the next digit (0) from the dividend to 35 and continue with: 350 / 864

Going ahead to step 7:
When dividing 350 by 864, we get 0 with a remainder of 350.
Put 0 as the next digit of the answer. 
Result so far: 6460.0
Subtracting 0 from 350 leaves us with 350.
Grab the next digit (4) from the dividend, add it to 350, then carry on: 3504 / 864

Advancing to step 8:
3504 divided by 864 is 4 with a remainder of 48.
Put 4 as the next digit of the answer. 
Result so far: 64604.0
Subtract 3456 from 3504 to get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

On to step 9:
When dividing 480 by 864, we get 0 with a remainder of 480.
Put 0 as the next digit of the answer. 
Result so far: 64604.0
Subtracting 0 from 480 leaves us with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Advancing to step 10:
If we divide 4800 by 864, we get 5 and a remainder of 480.
Record the quotient 5 as the next digit in the result. 
Result so far: 64604.05
The remainder is 480 after subtracting 4320 from 4800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Going ahead to step 11:
When dividing 4800 by 864, we get 5 with a remainder of 480.
The next digit of our result is 5. 
Result so far: 64604.055
If we subtract 4320 from 4800, we get 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

The final result is 64604.055 with a remainder of 0.048.