We're dividing 79387885 by 864 
We want to divide 79387885 by 864.

Step 1:
864 goes into 7 0 times with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Append the next digit (9) from the dividend to 7 and continue with: 79 / 864

Let's proceed to step 2:
If we divide 79 by 864, we get 0 and a remainder of 79.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 79 leaves us with 79.
Take the next digit (3) from the dividend and append it to 79, then repeat: 793 / 864

Moving on to step 3:
The number 864 fits into 793 0 times, leaving a remainder of 793.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 793 leaves us with 793.
Take the next digit (8) from the dividend and append it to 793, then repeat: 7938 / 864

On to step 4:
The number 864 fits into 7938 9 times, leaving a remainder of 162.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
Deduct 7776 from 7938 and we're left with 162.
Bring next digit (7) of the dividend behind the 162 and repeat the process: 1627 / 864

Advancing to step 5:
1627 divided by 864 is 1 with a remainder of 763.
Put 1 as the next digit of the answer. 
Result so far: 91.0
Subtract 864 from 1627 to get 763.
Append the next digit (8) from the dividend to 763 and continue with: 7638 / 864

Step 6:
If we divide 7638 by 864, we get 8 and a remainder of 726.
Record the quotient 8 as the next digit in the result. 
Result so far: 918.0
Subtract 6912 from 7638 to get 726.
Include the next digit (8) from the dividend after 726, then repeat: 7268 / 864

Step 7:
When dividing 7268 by 864, we get 8 with a remainder of 356.
Write down 8 as next digit of the result. 
Result so far: 9188.0
Subtracting 6912 from 7268 leaves us with 356.
Grab the next digit (5) from the dividend, add it to 356, then carry on: 3565 / 864

Moving on to step 8:
864 goes into 3565 4 times with a remainder of 109.
The number 4 becomes the next digit in our result. 
Result so far: 91884.0
Deduct 3456 from 3565 and we're left with 109.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1090, and continue the process.

Let's proceed to step 9:
864 can be fit into 1090 1 times, resulting in a remainder of 226.
Put 1 as the next digit of the answer. 
Result so far: 91884.1
Subtracting 864 from 1090 leaves us with 226.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2260, and continue the process.

Moving on to step 10:
If we divide 2260 by 864, we get 2 and a remainder of 532.
The number 2 becomes the next digit in our result. 
Result so far: 91884.12
If we subtract 1728 from 2260, we get 532.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5320, and continue the process.

Going ahead to step 11:
864 goes into 5320 6 times with a remainder of 136.
Put 6 as the next digit of the answer. 
Result so far: 91884.126
Subtracting 5184 from 5320 leaves us with 136.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1360, and continue the process.

Advancing to step 12:
864 goes into 1360 1 times with a remainder of 496.
Use 1 as the next digit of our solution. 
Result so far: 91884.1261
Subtract 864 from 1360 to get 496.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4960, and continue the process.

Advancing to step 13:
When dividing 4960 by 864, we get 5 with a remainder of 640.
The next digit of our result is 5. 
Result so far: 91884.12615
The remainder is 640 after subtracting 4320 from 4960.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

Going ahead to step 14:
The number 864 fits into 6400 7 times, leaving a remainder of 352.
Write down 7 as next digit of the result. 
Result so far: 91884.126157
If we take 6048 away from 6400, we end up with 352.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3520, and continue the process.

Step 15:
The number 864 fits into 3520 4 times, leaving a remainder of 64.
Use 4 as the next digit of our solution. 
Result so far: 91884.1261574
If we subtract 3456 from 3520, we get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Advancing to step 16:
864 can be fit into 640 0 times, resulting in a remainder of 640.
Record the quotient 0 as the next digit in the result. 
Result so far: 91884.1261574
Subtracting 0 from 640 leaves us with 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

The final outcome is 91884.1261574, with a leftover of 6.4e-07.