979643 ÷ 2 
Our goal is to divide 979643 by 2.

Step 1:
The number 2 fits into 9 4 times, leaving a remainder of 1.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Deduct 8 from 9 and we're left with 1.
Fetch the next digit (7) from the dividend, attach it to 1 and continue: 17 / 2

Advancing to step 2:
2 goes into 17 8 times with a remainder of 1.
Put 8 as the next digit of the answer. 
Result so far: 48.0
Subtracting 16 from 17 leaves us with 1.
Fetch the next digit (9) from the dividend, attach it to 1 and continue: 19 / 2

Advancing to step 3:
2 can be fit into 19 9 times, resulting in a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 489.0
If we subtract 18 from 19, we get 1.
Fetch the next digit (6) from the dividend, attach it to 1 and continue: 16 / 2

Going ahead to step 4:
16 divided by 2 is 8 with a remainder of 0.
The number 8 becomes the next digit in our result. 
Result so far: 4898.0
Subtracting 16 from 16 leaves us with 0.
Fetch the next digit (4) from the dividend, attach it to 0 and continue: 4 / 2

Let's proceed to step 5:
The number 2 fits into 4 2 times, leaving a remainder of 0.
Record the quotient 2 as the next digit in the result. 
Result so far: 48982.0
Deduct 4 from 4 and we're left with 0.
Include the next digit (3) from the dividend after 0, then repeat: 3 / 2

Going ahead to step 6:
The number 2 fits into 3 1 times, leaving a remainder of 1.
Use 1 as the next digit of our solution. 
Result so far: 489821.0
Subtracting 2 from 3 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.

Going ahead to step 7:
2 can be fit into 10 5 times, resulting in a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 489821.5
If we take 10 away from 10, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 8:
2 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 489821.5
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 9:
2 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 489821.5
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 489821.5, with a leftover of 0.0.