We look at the division of 79154668 by 686 
Let's see how many times 686 fits into 79154668.

Going ahead to step 1:
The number 686 fits into 7 0 times, leaving a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Include the next digit (9) from the dividend after 7, then repeat: 79 / 686

Going ahead to step 2:
686 can be fit into 79 0 times, resulting in a remainder of 79.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 79 to get 79.
Bring next digit (1) of the dividend behind the 79 and repeat the process: 791 / 686

Moving on to step 3:
686 can be fit into 791 1 times, resulting in a remainder of 105.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 105 after subtracting 686 from 791.
Bring next digit (5) of the dividend behind the 105 and repeat the process: 1055 / 686

Advancing to step 4:
1055 divided by 686 is 1 with a remainder of 369.
The next digit of our result is 1. 
Result so far: 11.0
The remainder is 369 after subtracting 686 from 1055.
Bring next digit (4) of the dividend behind the 369 and repeat the process: 3694 / 686

Advancing to step 5:
686 goes into 3694 5 times with a remainder of 264.
Write down 5 as next digit of the result. 
Result so far: 115.0
Subtracting 3430 from 3694 leaves us with 264.
Grab the next digit (6) from the dividend, add it to 264, then carry on: 2646 / 686

On to step 6:
If we divide 2646 by 686, we get 3 and a remainder of 588.
The next digit of our result is 3. 
Result so far: 1153.0
Subtracting 2058 from 2646 leaves us with 588.
Take the next digit (6) from the dividend and append it to 588, then repeat: 5886 / 686

Moving on to step 7:
5886 divided by 686 is 8 with a remainder of 398.
Use 8 as the next digit of our solution. 
Result so far: 11538.0
Deduct 5488 from 5886 and we're left with 398.
Fetch the next digit (8) from the dividend, attach it to 398 and continue: 3988 / 686

Advancing to step 8:
686 goes into 3988 5 times with a remainder of 558.
The number 5 becomes the next digit in our result. 
Result so far: 115385.0
If we take 3430 away from 3988, we end up with 558.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5580, and continue the process.

Step 9:
5580 divided by 686 is 8 with a remainder of 92.
Record the quotient 8 as the next digit in the result. 
Result so far: 115385.8
The remainder is 92 after subtracting 5488 from 5580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

Going ahead to step 10:
920 divided by 686 is 1 with a remainder of 234.
Put 1 as the next digit of the answer. 
Result so far: 115385.81
Subtracting 686 from 920 leaves us with 234.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2340, and continue the process.

On to step 11:
686 goes into 2340 3 times with a remainder of 282.
Write down 3 as next digit of the result. 
Result so far: 115385.813
Subtract 2058 from 2340 to get 282.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2820, and continue the process.

Step 12:
686 can be fit into 2820 4 times, resulting in a remainder of 76.
Put 4 as the next digit of the answer. 
Result so far: 115385.8134
The remainder is 76 after subtracting 2744 from 2820.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Going ahead to step 13:
The number 686 fits into 760 1 times, leaving a remainder of 74.
Put 1 as the next digit of the answer. 
Result so far: 115385.81341
If we take 686 away from 760, we end up 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.

Step 14:
686 can be fit into 740 1 times, resulting in a remainder of 54.
Write down 1 as next digit of the result. 
Result so far: 115385.813411
If we subtract 686 from 740, we get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

The quotient of the division is 115385.813411, and the remainder is 5.4e-06.