71779091 ÷ 864 
We want to divide 71779091 by 864.

Step 1:
When dividing 7 by 864, we get 0 with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Fetch the next digit (1) from the dividend, attach it to 7 and continue: 71 / 864

Moving on to step 2:
864 can be fit into 71 0 times, resulting in a remainder of 71.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 71, we end up with 71.
Grab the next digit (7) from the dividend, add it to 71, then carry on: 717 / 864

Going ahead to step 3:
864 can be fit into 717 0 times, resulting in a remainder of 717.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 717 to get 717.
Take the next digit (7) from the dividend and append it to 717, then repeat: 7177 / 864

Advancing to step 4:
The number 864 fits into 7177 8 times, leaving a remainder of 265.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Subtracting 6912 from 7177 leaves us with 265.
Grab the next digit (9) from the dividend, add it to 265, then carry on: 2659 / 864

Going ahead to step 5:
If we divide 2659 by 864, we get 3 and a remainder of 67.
The number 3 becomes the next digit in our result. 
Result so far: 83.0
The remainder is 67 after subtracting 2592 from 2659.
Append the next digit (0) from the dividend to 67 and continue with: 670 / 864

Advancing to step 6:
864 goes into 670 0 times with a remainder of 670.
Use 0 as the next digit of our solution. 
Result so far: 830.0
The remainder is 670 after subtracting 0 from 670.
Include the next digit (9) from the dividend after 670, then repeat: 6709 / 864

Going ahead to step 7:
864 can be fit into 6709 7 times, resulting in a remainder of 661.
The number 7 becomes the next digit in our result. 
Result so far: 8307.0
If we subtract 6048 from 6709, we get 661.
Fetch the next digit (1) from the dividend, attach it to 661 and continue: 6611 / 864

Step 8:
6611 divided by 864 is 7 with a remainder of 563.
Put 7 as the next digit of the answer. 
Result so far: 83077.0
Subtracting 6048 from 6611 leaves us with 563.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5630, and continue the process.

On to step 9:
The number 864 fits into 5630 6 times, leaving a remainder of 446.
The number 6 becomes the next digit in our result. 
Result so far: 83077.6
The remainder is 446 after subtracting 5184 from 5630.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4460, and continue the process.

Let's proceed to step 10:
4460 divided by 864 is 5 with a remainder of 140.
The number 5 becomes the next digit in our result. 
Result so far: 83077.65
If we subtract 4320 from 4460, we get 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Advancing to step 11:
The number 864 fits into 1400 1 times, leaving a remainder of 536.
Put 1 as the next digit of the answer. 
Result so far: 83077.651
Deduct 864 from 1400 and we're left with 536.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5360, and continue the process.

Going ahead to step 12:
When dividing 5360 by 864, we get 6 with a remainder of 176.
Write down 6 as next digit of the result. 
Result so far: 83077.6516
If we take 5184 away from 5360, we end up with 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

On to step 13:
864 goes into 1760 2 times with a remainder of 32.
Put 2 as the next digit of the answer. 
Result so far: 83077.65162
The remainder is 32 after subtracting 1728 from 1760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 14:
The number 864 fits into 320 0 times, leaving a remainder of 320.
Use 0 as the next digit of our solution. 
Result so far: 83077.65162
If we take 0 away from 320, we end up with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Going ahead to step 15:
864 goes into 3200 3 times with a remainder of 608.
Write down 3 as next digit of the result. 
Result so far: 83077.6516203
Subtracting 2592 from 3200 leaves us with 608.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6080, and continue the process.

Advancing to step 16:
6080 divided by 864 is 7 with a remainder of 32.
The next digit of our result is 7. 
Result so far: 83077.65162037
The remainder is 32 after subtracting 6048 from 6080.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

The final result is 83077.65162037 with a remainder of 3.2e-08.