142749 ÷ 80 
Our goal is to divide 142749 by 80.

On to step 1:
If we divide 1 by 80, we get 0 and a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Fetch the next digit (4) from the dividend, attach it to 1 and continue: 14 / 80

Going ahead to step 2:
The number 80 fits into 14 0 times, leaving a remainder of 14.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 14 to get 14.
Take the next digit (2) from the dividend and append it to 14, then repeat: 142 / 80

Going ahead to step 3:
If we divide 142 by 80, we get 1 and a remainder of 62.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 80 from 142 leaves us with 62.
Fetch the next digit (7) from the dividend, attach it to 62 and continue: 627 / 80

Moving on to step 4:
80 goes into 627 7 times with a remainder of 67.
Use 7 as the next digit of our solution. 
Result so far: 17.0
Deduct 560 from 627 and we're left with 67.
Fetch the next digit (4) from the dividend, attach it to 67 and continue: 674 / 80

Going ahead to step 5:
674 divided by 80 is 8 with a remainder of 34.
Record the quotient 8 as the next digit in the result. 
Result so far: 178.0
If we subtract 640 from 674, we get 34.
Include the next digit (9) from the dividend after 34, then repeat: 349 / 80

Advancing to step 6:
349 divided by 80 is 4 with a remainder of 29.
The number 4 becomes the next digit in our result. 
Result so far: 1784.0
Deduct 320 from 349 and we're left with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Step 7:
The number 80 fits into 290 3 times, leaving a remainder of 50.
Put 3 as the next digit of the answer. 
Result so far: 1784.3
Subtract 240 from 290 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 8:
If we divide 500 by 80, we get 6 and a remainder of 20.
The number 6 becomes the next digit in our result. 
Result so far: 1784.36
Deduct 480 from 500 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 9:
The number 80 fits into 200 2 times, leaving a remainder of 40.
Put 2 as the next digit of the answer. 
Result so far: 1784.362
The remainder is 40 after subtracting 160 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 10:
When dividing 400 by 80, we get 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 1784.3625
Subtract 400 from 400 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.

On to step 11:
When dividing 0 by 80, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 1784.3625
Subtract 0 from 0 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.

On to step 12:
If we divide 0 by 80, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 1784.3625
If we subtract 0 from 0, 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.

In conclusion, the division gives 1784.3625 with a balance of 0.0.