77118191 ÷ 78 
Our goal is to divide 77118191 by 78.

Advancing to step 1:
If we divide 7 by 78, we get 0 and a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Bring next digit (7) of the dividend behind the 7 and repeat the process: 77 / 78

On to step 2:
78 goes into 77 0 times with a remainder of 77.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 77, we get 77.
Bring next digit (1) of the dividend behind the 77 and repeat the process: 771 / 78

Moving on to step 3:
78 can be fit into 771 9 times, resulting in a remainder of 69.
Write down 9 as next digit of the result. 
Result so far: 9.0
If we subtract 702 from 771, we get 69.
Fetch the next digit (1) from the dividend, attach it to 69 and continue: 691 / 78

Advancing to step 4:
78 can be fit into 691 8 times, resulting in a remainder of 67.
The next digit of our result is 8. 
Result so far: 98.0
Subtract 624 from 691 to get 67.
Take the next digit (8) from the dividend and append it to 67, then repeat: 678 / 78

Advancing to step 5:
If we divide 678 by 78, we get 8 and a remainder of 54.
Put 8 as the next digit of the answer. 
Result so far: 988.0
Subtract 624 from 678 to get 54.
Grab the next digit (1) from the dividend, add it to 54, then carry on: 541 / 78

Let's proceed to step 6:
541 divided by 78 is 6 with a remainder of 73.
Record the quotient 6 as the next digit in the result. 
Result so far: 9886.0
If we take 468 away from 541, we end up with 73.
Append the next digit (9) from the dividend to 73 and continue with: 739 / 78

Going ahead to step 7:
78 can be fit into 739 9 times, resulting in a remainder of 37.
The number 9 becomes the next digit in our result. 
Result so far: 98869.0
If we take 702 away from 739, we end up with 37.
Grab the next digit (1) from the dividend, add it to 37, then carry on: 371 / 78

Advancing to step 8:
371 divided by 78 is 4 with a remainder of 59.
Put 4 as the next digit of the answer. 
Result so far: 988694.0
The remainder is 59 after subtracting 312 from 371.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Advancing to step 9:
78 can be fit into 590 7 times, resulting in a remainder of 44.
The number 7 becomes the next digit in our result. 
Result so far: 988694.7
Subtracting 546 from 590 leaves us with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Let's proceed to step 10:
440 divided by 78 is 5 with a remainder of 50.
The next digit of our result is 5. 
Result so far: 988694.75
The remainder is 50 after subtracting 390 from 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 11:
If we divide 500 by 78, we get 6 and a remainder of 32.
The next digit of our result is 6. 
Result so far: 988694.756
If we take 468 away from 500, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Let's proceed to step 12:
When dividing 320 by 78, we get 4 with a remainder of 8.
The next digit of our result is 4. 
Result so far: 988694.7564
Subtracting 312 from 320 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 13:
80 divided by 78 is 1 with a remainder of 2.
Record the quotient 1 as the next digit in the result. 
Result so far: 988694.75641
If we take 78 away from 80, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 14:
If we divide 20 by 78, we get 0 and a remainder of 20.
The next digit of our result is 0. 
Result so far: 988694.75641
Deduct 0 from 20 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 15:
78 goes into 200 2 times with a remainder of 44.
Record the quotient 2 as the next digit in the result. 
Result so far: 988694.7564102
Subtract 156 from 200 to get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

On to step 16:
When dividing 440 by 78, we get 5 with a remainder of 50.
Put 5 as the next digit of the answer. 
Result so far: 988694.75641025
Subtract 390 from 440 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

In conclusion, the division gives 988694.75641025 with a balance of 5e-08.