642751 ÷ 80 
Our goal is to divide 642751 by 80.

Moving on to step 1:
6 divided by 80 is 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 80

Let's proceed to step 2:
80 can be fit into 64 0 times, resulting in a remainder of 64.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 64, we end up with 64.
Append the next digit (2) from the dividend to 64 and continue with: 642 / 80

Step 3:
When dividing 642 by 80, we get 8 with a remainder of 2.
Use 8 as the next digit of our solution. 
Result so far: 8.0
Subtract 640 from 642 to get 2.
Grab the next digit (7) from the dividend, add it to 2, then carry on: 27 / 80

Step 4:
80 goes into 27 0 times with a remainder of 27.
The number 0 becomes the next digit in our result. 
Result so far: 80.0
Subtract 0 from 27 to get 27.
Append the next digit (5) from the dividend to 27 and continue with: 275 / 80

Step 5:
When dividing 275 by 80, we get 3 with a remainder of 35.
Write down 3 as next digit of the result. 
Result so far: 803.0
Subtract 240 from 275 to get 35.
Take the next digit (1) from the dividend and append it to 35, then repeat: 351 / 80

Advancing to step 6:
The number 80 fits into 351 4 times, leaving a remainder of 31.
The number 4 becomes the next digit in our result. 
Result so far: 8034.0
The remainder is 31 after subtracting 320 from 351.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Moving on to step 7:
80 goes into 310 3 times with a remainder of 70.
The number 3 becomes the next digit in our result. 
Result so far: 8034.3
Subtract 240 from 310 to get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Moving on to step 8:
If we divide 700 by 80, we get 8 and a remainder of 60.
Put 8 as the next digit of the answer. 
Result so far: 8034.38
Subtract 640 from 700 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Advancing to step 9:
When dividing 600 by 80, we get 7 with a remainder of 40.
Write down 7 as next digit of the result. 
Result so far: 8034.387
Subtract 560 from 600 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 10:
The number 80 fits into 400 5 times, leaving a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 8034.3875
If we subtract 400 from 400, we 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.

Moving on to step 11:
0 divided by 80 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 8034.3875
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 12:
If we divide 0 by 80, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 8034.3875
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.

The quotient of the division is 8034.3875, and the remainder is 0.0.