81643082 ÷ 78 
Our goal is to divide 81643082 by 78.

On to step 1:
If we divide 8 by 78, we get 0 and a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 78

Step 2:
If we divide 81 by 78, we get 1 and a remainder of 3.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 78 away from 81, we end up with 3.
Take the next digit (6) from the dividend and append it to 3, then repeat: 36 / 78

Advancing to step 3:
78 goes into 36 0 times with a remainder of 36.
Write down 0 as next digit of the result. 
Result so far: 10.0
If we subtract 0 from 36, we get 36.
Include the next digit (4) from the dividend after 36, then repeat: 364 / 78

On to step 4:
78 can be fit into 364 4 times, resulting in a remainder of 52.
Put 4 as the next digit of the answer. 
Result so far: 104.0
Deduct 312 from 364 and we're left with 52.
Take the next digit (3) from the dividend and append it to 52, then repeat: 523 / 78

Let's proceed to step 5:
78 can be fit into 523 6 times, resulting in a remainder of 55.
Write down 6 as next digit of the result. 
Result so far: 1046.0
If we take 468 away from 523, we end up with 55.
Bring next digit (0) of the dividend behind the 55 and repeat the process: 550 / 78

Advancing to step 6:
78 goes into 550 7 times with a remainder of 4.
The next digit of our result is 7. 
Result so far: 10467.0
If we take 546 away from 550, we end up with 4.
Grab the next digit (8) from the dividend, add it to 4, then carry on: 48 / 78

Step 7:
78 goes into 48 0 times with a remainder of 48.
Record the quotient 0 as the next digit in the result. 
Result so far: 104670.0
Subtract 0 from 48 to get 48.
Fetch the next digit (2) from the dividend, attach it to 48 and continue: 482 / 78

On to step 8:
78 goes into 482 6 times with a remainder of 14.
Record the quotient 6 as the next digit in the result. 
Result so far: 1046706.0
Subtract 468 from 482 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

On to step 9:
140 divided by 78 is 1 with a remainder of 62.
The number 1 becomes the next digit in our result. 
Result so far: 1046706.1
The remainder is 62 after subtracting 78 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

On to step 10:
The number 78 fits into 620 7 times, leaving a remainder of 74.
Record the quotient 7 as the next digit in the result. 
Result so far: 1046706.17
Subtract 546 from 620 to get 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Step 11:
The number 78 fits into 740 9 times, leaving a remainder of 38.
The number 9 becomes the next digit in our result. 
Result so far: 1046706.179
Subtract 702 from 740 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Let's proceed to step 12:
78 goes into 380 4 times with a remainder of 68.
Use 4 as the next digit of our solution. 
Result so far: 1046706.1794
If we take 312 away from 380, we end up with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Going ahead to step 13:
78 goes into 680 8 times with a remainder of 56.
The next digit of our result is 8. 
Result so far: 1046706.17948
Subtract 624 from 680 to get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Going ahead to step 14:
78 can be fit into 560 7 times, resulting in a remainder of 14.
Put 7 as the next digit of the answer. 
Result so far: 1046706.179487
If we take 546 away from 560, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 15:
When dividing 140 by 78, we get 1 with a remainder of 62.
Write down 1 as next digit of the result. 
Result so far: 1046706.1794871
Subtract 78 from 140 to get 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

On to step 16:
620 divided by 78 is 7 with a remainder of 74.
Write down 7 as next digit of the result. 
Result so far: 1046706.17948717
Subtracting 546 from 620 leaves us with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Our division results in 1046706.17948717 with a remaining 7.4e-08.