Let's divide 642376 by 80
We're looking to find how many times 80 goes into 642376.

Advancing to step 1:
6 divided by 80 is 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Take the next digit (4) from the dividend and append it to 6, then repeat: 64 / 80

On to step 2:
If we divide 64 by 80, we get 0 and a remainder of 64.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 64, we get 64.
Append the next digit (2) from the dividend to 64 and continue with: 642 / 80

On to step 3:
80 can be fit into 642 8 times, resulting in a remainder of 2.
Use 8 as the next digit of our solution. 
Result so far: 8.0
The remainder is 2 after subtracting 640 from 642.
Fetch the next digit (3) from the dividend, attach it to 2 and continue: 23 / 80

Advancing to step 4:
If we divide 23 by 80, we get 0 and a remainder of 23.
Use 0 as the next digit of our solution. 
Result so far: 80.0
If we subtract 0 from 23, we get 23.
Fetch the next digit (7) from the dividend, attach it to 23 and continue: 237 / 80

Step 5:
If we divide 237 by 80, we get 2 and a remainder of 77.
Write down 2 as next digit of the result. 
Result so far: 802.0
Deduct 160 from 237 and we're left with 77.
Fetch the next digit (6) from the dividend, attach it to 77 and continue: 776 / 80

Moving on to step 6:
When dividing 776 by 80, we get 9 with a remainder of 56.
The next digit of our result is 9. 
Result so far: 8029.0
Subtracting 720 from 776 leaves us with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

On to step 7:
80 goes into 560 7 times with a remainder of 0.
Record the quotient 7 as the next digit in the result. 
Result so far: 8029.7
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.

On to step 8:
The number 80 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 8029.7
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.

Advancing to step 9:
80 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 8029.7
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 result is 8029.7 with a remainder of 0.0.