We look at the division of 77769996 by 864 
We want to figure out the number of times 77769996 can be divided by 864.

On to step 1:
864 goes into 7 0 times with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Include the next digit (7) from the dividend after 7, then repeat: 77 / 864

On to step 2:
864 goes into 77 0 times with a remainder of 77.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 77 to get 77.
Append the next digit (7) from the dividend to 77 and continue with: 777 / 864

On to step 3:
If we divide 777 by 864, we get 0 and a remainder of 777.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 777 and we're left with 777.
Grab the next digit (6) from the dividend, add it to 777, then carry on: 7776 / 864

Moving on to step 4:
7776 divided by 864 is 9 with a remainder of 0.
Put 9 as the next digit of the answer. 
Result so far: 9.0
Subtracting 7776 from 7776 leaves us with 0.
Include the next digit (9) from the dividend after 0, then repeat: 9 / 864

Step 5:
When dividing 9 by 864, we get 0 with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 90.0
Deduct 0 from 9 and we're left with 9.
Take the next digit (9) from the dividend and append it to 9, then repeat: 99 / 864

Advancing to step 6:
When dividing 99 by 864, we get 0 with a remainder of 99.
Write down 0 as next digit of the result. 
Result so far: 900.0
Subtracting 0 from 99 leaves us with 99.
Grab the next digit (9) from the dividend, add it to 99, then carry on: 999 / 864

On to step 7:
The number 864 fits into 999 1 times, leaving a remainder of 135.
Write down 1 as next digit of the result. 
Result so far: 9001.0
Deduct 864 from 999 and we're left with 135.
Fetch the next digit (6) from the dividend, attach it to 135 and continue: 1356 / 864

Step 8:
The number 864 fits into 1356 1 times, leaving a remainder of 492.
The next digit of our result is 1. 
Result so far: 90011.0
Deduct 864 from 1356 and we're left with 492.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4920, and continue the process.

Step 9:
864 can be fit into 4920 5 times, resulting in a remainder of 600.
Use 5 as the next digit of our solution. 
Result so far: 90011.5
If we take 4320 away from 4920, we end up with 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

On to step 10:
864 goes into 6000 6 times with a remainder of 816.
The number 6 becomes the next digit in our result. 
Result so far: 90011.56
If we take 5184 away from 6000, we end up with 816.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8160, and continue the process.

Advancing to step 11:
8160 divided by 864 is 9 with a remainder of 384.
Write down 9 as next digit of the result. 
Result so far: 90011.569
If we take 7776 away from 8160, we end up with 384.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3840, and continue the process.

Advancing to step 12:
The number 864 fits into 3840 4 times, leaving a remainder of 384.
Put 4 as the next digit of the answer. 
Result so far: 90011.5694
Deduct 3456 from 3840 and we're left with 384.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3840, and continue the process.

On to step 13:
3840 divided by 864 is 4 with a remainder of 384.
Use 4 as the next digit of our solution. 
Result so far: 90011.56944
Subtracting 3456 from 3840 leaves us with 384.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3840, and continue the process.

The quotient of the division is 90011.56944, and the remainder is 0.000384.