We're dividing 686407 by 84 
Our goal is to divide 686407 by 84.

Moving on to step 1:
The number 84 fits into 6 0 times, leaving a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Fetch the next digit (8) from the dividend, attach it to 6 and continue: 68 / 84

Let's proceed to step 2:
If we divide 68 by 84, we get 0 and a remainder of 68.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 68, we end up with 68.
Include the next digit (6) from the dividend after 68, then repeat: 686 / 84

On to step 3:
If we divide 686 by 84, we get 8 and a remainder of 14.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
Deduct 672 from 686 and we're left with 14.
Include the next digit (4) from the dividend after 14, then repeat: 144 / 84

Going ahead to step 4:
144 divided by 84 is 1 with a remainder of 60.
Use 1 as the next digit of our solution. 
Result so far: 81.0
Subtracting 84 from 144 leaves us with 60.
Include the next digit (0) from the dividend after 60, then repeat: 600 / 84

On to step 5:
The number 84 fits into 600 7 times, leaving a remainder of 12.
The number 7 becomes the next digit in our result. 
Result so far: 817.0
Deduct 588 from 600 and we're left with 12.
Fetch the next digit (7) from the dividend, attach it to 12 and continue: 127 / 84

Step 6:
84 goes into 127 1 times with a remainder of 43.
Write down 1 as next digit of the result. 
Result so far: 8171.0
If we take 84 away from 127, we end up with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Let's proceed to step 7:
When dividing 430 by 84, we get 5 with a remainder of 10.
Record the quotient 5 as the next digit in the result. 
Result so far: 8171.5
If we take 420 away from 430, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 8:
100 divided by 84 is 1 with a remainder of 16.
The number 1 becomes the next digit in our result. 
Result so far: 8171.51
The remainder is 16 after subtracting 84 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 9:
If we divide 160 by 84, we get 1 and a remainder of 76.
Write down 1 as next digit of the result. 
Result so far: 8171.511
The remainder is 76 after subtracting 84 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

The final result is 8171.511 with a remainder of 0.0076.