642699 ÷ 5 
We want to divide 642699 by 5.

Advancing to step 1:
When dividing 6 by 5, we get 1 with a remainder of 1.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 5 from 6 and we're left with 1.
Take the next digit (4) from the dividend and append it to 1, then repeat: 14 / 5

Moving on to step 2:
When dividing 14 by 5, we get 2 with a remainder of 4.
Use 2 as the next digit of our solution. 
Result so far: 12.0
If we take 10 away from 14, we end up with 4.
Fetch the next digit (2) from the dividend, attach it to 4 and continue: 42 / 5

Going ahead to step 3:
When dividing 42 by 5, we get 8 with a remainder of 2.
Put 8 as the next digit of the answer. 
Result so far: 128.0
If we subtract 40 from 42, we get 2.
Take the next digit (6) from the dividend and append it to 2, then repeat: 26 / 5

Advancing to step 4:
5 goes into 26 5 times with a remainder of 1.
The next digit of our result is 5. 
Result so far: 1285.0
Deduct 25 from 26 and we're left with 1.
Fetch the next digit (9) from the dividend, attach it to 1 and continue: 19 / 5

Advancing to step 5:
5 goes into 19 3 times with a remainder of 4.
Record the quotient 3 as the next digit in the result. 
Result so far: 12853.0
The remainder is 4 after subtracting 15 from 19.
Include the next digit (9) from the dividend after 4, then repeat: 49 / 5

Going ahead to step 6:
The number 5 fits into 49 9 times, leaving a remainder of 4.
Use 9 as the next digit of our solution. 
Result so far: 128539.0
Deduct 45 from 49 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.

Moving on to step 7:
If we divide 40 by 5, we get 8 and a remainder of 0.
The next digit of our result is 8. 
Result so far: 128539.8
Subtract 40 from 40 to get 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 8:
5 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 128539.8
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 9:
0 divided by 5 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 128539.8
Deduct 0 from 0 and we're left 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.

After the division, we end up with 128539.8 and a remainder of 0.0.