We look at the division of 686428 by 77 
Our goal is to divide 686428 by 77.

Advancing to step 1:
6 divided by 77 is 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Take the next digit (8) from the dividend and append it to 6, then repeat: 68 / 77

On to step 2:
The number 77 fits into 68 0 times, leaving a remainder of 68.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 68 and we're left with 68.
Take the next digit (6) from the dividend and append it to 68, then repeat: 686 / 77

Step 3:
77 goes into 686 8 times with a remainder of 70.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
The remainder is 70 after subtracting 616 from 686.
Bring next digit (4) of the dividend behind the 70 and repeat the process: 704 / 77

Advancing to step 4:
When dividing 704 by 77, we get 9 with a remainder of 11.
Record the quotient 9 as the next digit in the result. 
Result so far: 89.0
The remainder is 11 after subtracting 693 from 704.
Fetch the next digit (2) from the dividend, attach it to 11 and continue: 112 / 77

Let's proceed to step 5:
The number 77 fits into 112 1 times, leaving a remainder of 35.
The number 1 becomes the next digit in our result. 
Result so far: 891.0
If we subtract 77 from 112, we get 35.
Append the next digit (8) from the dividend to 35 and continue with: 358 / 77

Advancing to step 6:
77 can be fit into 358 4 times, resulting in a remainder of 50.
Record the quotient 4 as the next digit in the result. 
Result so far: 8914.0
Deduct 308 from 358 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Moving on to step 7:
The number 77 fits into 500 6 times, leaving a remainder of 38.
Write down 6 as next digit of the result. 
Result so far: 8914.6
If we take 462 away from 500, we end up with 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 8:
77 can be fit into 380 4 times, resulting in a remainder of 72.
Record the quotient 4 as the next digit in the result. 
Result so far: 8914.64
Subtracting 308 from 380 leaves us with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Advancing to step 9:
The number 77 fits into 720 9 times, leaving a remainder of 27.
The number 9 becomes the next digit in our result. 
Result so far: 8914.649
Subtract 693 from 720 to get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Step 10:
When dividing 270 by 77, we get 3 with a remainder of 39.
Record the quotient 3 as the next digit in the result. 
Result so far: 8914.6493
If we subtract 231 from 270, we get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Moving on to step 11:
When dividing 390 by 77, we get 5 with a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 8914.64935
Subtracting 385 from 390 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 12:
77 can be fit into 50 0 times, resulting in a remainder of 50.
Record the quotient 0 as the next digit in the result. 
Result so far: 8914.64935
If we take 0 away from 50, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Moving on to step 13:
500 divided by 77 is 6 with a remainder of 38.
The number 6 becomes the next digit in our result. 
Result so far: 8914.6493506
If we take 462 away from 500, we end up with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Moving on to step 14:
77 goes into 380 4 times with a remainder of 72.
Use 4 as the next digit of our solution. 
Result so far: 8914.64935064
If we subtract 308 from 380, we get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

The final outcome is 8914.64935064, with a leftover of 7.2e-08.