309663 divided by 7 
Our goal is to divide 309663 by 7.

Advancing to step 1:
7 can be fit into 3 0 times, resulting in a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Grab the next digit (0) from the dividend, add it to 3, then carry on: 30 / 7

Moving on to step 2:
When dividing 30 by 7, we get 4 with a remainder of 2.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Subtracting 28 from 30 leaves us with 2.
Append the next digit (9) from the dividend to 2 and continue with: 29 / 7

On to step 3:
29 divided by 7 is 4 with a remainder of 1.
Put 4 as the next digit of the answer. 
Result so far: 44.0
Deduct 28 from 29 and we're left with 1.
Bring next digit (6) of the dividend behind the 1 and repeat the process: 16 / 7

Advancing to step 4:
If we divide 16 by 7, we get 2 and a remainder of 2.
Record the quotient 2 as the next digit in the result. 
Result so far: 442.0
The remainder is 2 after subtracting 14 from 16.
Fetch the next digit (6) from the dividend, attach it to 2 and continue: 26 / 7

Moving on to step 5:
If we divide 26 by 7, we get 3 and a remainder of 5.
Put 3 as the next digit of the answer. 
Result so far: 4423.0
Subtracting 21 from 26 leaves us with 5.
Append the next digit (3) from the dividend to 5 and continue with: 53 / 7

On to step 6:
If we divide 53 by 7, we get 7 and a remainder of 4.
Put 7 as the next digit of the answer. 
Result so far: 44237.0
Subtracting 49 from 53 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 7:
If we divide 40 by 7, we get 5 and a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 44237.5
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.

Let's proceed to step 8:
7 goes into 50 7 times with a remainder of 1.
Record the quotient 7 as the next digit in the result. 
Result so far: 44237.57
Subtracting 49 from 50 leaves us 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.

Let's proceed to step 9:
7 can be fit into 10 1 times, resulting in a remainder of 3.
Write down 1 as next digit of the result. 
Result so far: 44237.571
If we subtract 7 from 10, we 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.

Let's proceed to step 10:
7 can be fit into 30 4 times, resulting in a remainder of 2.
The number 4 becomes the next digit in our result. 
Result so far: 44237.5714
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 11:
If we divide 20 by 7, we get 2 and a remainder of 6.
Use 2 as the next digit of our solution. 
Result so far: 44237.57142
The remainder is 6 after subtracting 14 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 12:
7 goes into 60 8 times with a remainder of 4.
The next digit of our result is 8. 
Result so far: 44237.571428
Deduct 56 from 60 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 13:
When dividing 40 by 7, we get 5 with a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 44237.5714285
Subtracting 35 from 40 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 14:
7 can be fit into 50 7 times, resulting in a remainder of 1.
Record the quotient 7 as the next digit in the result. 
Result so far: 44237.57142857
Subtracting 49 from 50 leaves us 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.

The final outcome is 44237.57142857, with a leftover of 1e-09.