143638 ÷ 80 
We're looking to find how many times 80 goes into 143638.

Step 1:
The number 80 fits into 1 0 times, leaving 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.
Grab the next digit (4) from the dividend, add it to 1, then carry on: 14 / 80

Going ahead to step 2:
The number 80 fits into 14 0 times, leaving a remainder of 14.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 14 to get 14.
Include the next digit (3) from the dividend after 14, then repeat: 143 / 80

Advancing to step 3:
80 goes into 143 1 times with a remainder of 63.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 63 after subtracting 80 from 143.
Include the next digit (6) from the dividend after 63, then repeat: 636 / 80

Step 4:
If we divide 636 by 80, we get 7 and a remainder of 76.
The next digit of our result is 7. 
Result so far: 17.0
The remainder is 76 after subtracting 560 from 636.
Bring next digit (3) of the dividend behind the 76 and repeat the process: 763 / 80

Going ahead to step 5:
When dividing 763 by 80, we get 9 with a remainder of 43.
The next digit of our result is 9. 
Result so far: 179.0
If we subtract 720 from 763, we get 43.
Take the next digit (8) from the dividend and append it to 43, then repeat: 438 / 80

Going ahead to step 6:
80 can be fit into 438 5 times, resulting in a remainder of 38.
Write down 5 as next digit of the result. 
Result so far: 1795.0
The remainder is 38 after subtracting 400 from 438.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Going ahead to step 7:
If we divide 380 by 80, we get 4 and a remainder of 60.
Use 4 as the next digit of our solution. 
Result so far: 1795.4
Subtract 320 from 380 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.

Moving on to step 8:
80 can be fit into 600 7 times, resulting in a remainder of 40.
Put 7 as the next digit of the answer. 
Result so far: 1795.47
If we subtract 560 from 600, we 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.

On to step 9:
80 goes into 400 5 times with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 1795.475
If we take 400 away from 400, 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.

Going ahead to step 10:
If we divide 0 by 80, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 1795.475
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.

Advancing to step 11:
80 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 1795.475
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.

The quotient of the division is 1795.475, and the remainder is 0.0.