We're dividing 646686 by 7 
We're looking to find how many times 7 goes into 646686.

Let's proceed to step 1:
6 divided by 7 is 0 with 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.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 7

Advancing to step 2:
7 goes into 64 9 times with a remainder of 1.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
Deduct 63 from 64 and we're left with 1.
Append the next digit (6) from the dividend to 1 and continue with: 16 / 7

Going ahead to step 3:
16 divided by 7 is 2 with a remainder of 2.
Put 2 as the next digit of the answer. 
Result so far: 92.0
If we subtract 14 from 16, we get 2.
Include the next digit (6) from the dividend after 2, then repeat: 26 / 7

On to step 4:
If we divide 26 by 7, we get 3 and a remainder of 5.
Record the quotient 3 as the next digit in the result. 
Result so far: 923.0
If we subtract 21 from 26, we get 5.
Grab the next digit (8) from the dividend, add it to 5, then carry on: 58 / 7

Moving on to step 5:
When dividing 58 by 7, we get 8 with a remainder of 2.
Write down 8 as next digit of the result. 
Result so far: 9238.0
If we subtract 56 from 58, we get 2.
Bring next digit (6) of the dividend behind the 2 and repeat the process: 26 / 7

Moving on to step 6:
7 goes into 26 3 times with a remainder of 5.
Record the quotient 3 as the next digit in the result. 
Result so far: 92383.0
Subtract 21 from 26 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 7:
The number 7 fits into 50 7 times, leaving a remainder of 1.
Write down 7 as next digit of the result. 
Result so far: 92383.7
Subtract 49 from 50 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 8:
7 goes into 10 1 times with a remainder of 3.
Write down 1 as next digit of the result. 
Result so far: 92383.71
Subtract 7 from 10 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 9:
If we divide 30 by 7, we get 4 and a remainder of 2.
Record the quotient 4 as the next digit in the result. 
Result so far: 92383.714
Subtracting 28 from 30 leaves us 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 10:
7 can be fit into 20 2 times, resulting in a remainder of 6.
The number 2 becomes the next digit in our result. 
Result so far: 92383.7142
Subtract 14 from 20 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 11:
7 can be fit into 60 8 times, resulting in a remainder of 4.
The number 8 becomes the next digit in our result. 
Result so far: 92383.71428
If we subtract 56 from 60, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 12:
When dividing 40 by 7, we get 5 with a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 92383.714285
If we take 35 away from 40, we end up 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.

Going ahead to step 13:
7 goes into 50 7 times with a remainder of 1.
Use 7 as the next digit of our solution. 
Result so far: 92383.7142857
Deduct 49 from 50 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 14:
7 goes into 10 1 times with a remainder of 3.
Use 1 as the next digit of our solution. 
Result so far: 92383.71428571
Subtract 7 from 10 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Our division results in 92383.71428571 with a remaining 3e-09.