We're dividing 638616 by 80 
We want to figure out the number of times 638616 can be divided by 80.

Let's proceed to step 1:
80 goes into 6 0 times with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Include the next digit (3) from the dividend after 6, then repeat: 63 / 80

Moving on to step 2:
80 can be fit into 63 0 times, resulting in a remainder of 63.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 63 and we're left with 63.
Bring next digit (8) of the dividend behind the 63 and repeat the process: 638 / 80

Step 3:
The number 80 fits into 638 7 times, leaving a remainder of 78.
Write down 7 as next digit of the result. 
Result so far: 7.0
If we take 560 away from 638, we end up with 78.
Fetch the next digit (6) from the dividend, attach it to 78 and continue: 786 / 80

On to step 4:
If we divide 786 by 80, we get 9 and a remainder of 66.
Use 9 as the next digit of our solution. 
Result so far: 79.0
If we take 720 away from 786, we end up with 66.
Append the next digit (1) from the dividend to 66 and continue with: 661 / 80

Advancing to step 5:
The number 80 fits into 661 8 times, leaving a remainder of 21.
The number 8 becomes the next digit in our result. 
Result so far: 798.0
The remainder is 21 after subtracting 640 from 661.
Bring next digit (6) of the dividend behind the 21 and repeat the process: 216 / 80

Going ahead to step 6:
80 goes into 216 2 times with a remainder of 56.
Use 2 as the next digit of our solution. 
Result so far: 7982.0
If we subtract 160 from 216, we get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Step 7:
When dividing 560 by 80, we get 7 with a remainder of 0.
The number 7 becomes the next digit in our result. 
Result so far: 7982.7
Subtracting 560 from 560 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.

Moving on to step 8:
0 divided by 80 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 7982.7
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.

On to step 9:
When dividing 0 by 80, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 7982.7
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.

The quotient of the division is 7982.7, and the remainder is 0.0.