103144 divided by 80 
Let's see how many times 80 fits into 103144.

Step 1:
1 divided by 80 is 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Bring next digit (0) of the dividend behind the 1 and repeat the process: 10 / 80

Advancing to step 2:
When dividing 10 by 80, we get 0 with a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 10 to get 10.
Grab the next digit (3) from the dividend, add it to 10, then carry on: 103 / 80

On to step 3:
When dividing 103 by 80, we get 1 with a remainder of 23.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 80 away from 103, we end up with 23.
Fetch the next digit (1) from the dividend, attach it to 23 and continue: 231 / 80

Advancing to step 4:
80 goes into 231 2 times with a remainder of 71.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
Deduct 160 from 231 and we're left with 71.
Include the next digit (4) from the dividend after 71, then repeat: 714 / 80

On to step 5:
80 goes into 714 8 times with a remainder of 74.
Write down 8 as next digit of the result. 
Result so far: 128.0
Subtract 640 from 714 to get 74.
Include the next digit (4) from the dividend after 74, then repeat: 744 / 80

Step 6:
When dividing 744 by 80, we get 9 with a remainder of 24.
The next digit of our result is 9. 
Result so far: 1289.0
Subtract 720 from 744 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 7:
If we divide 240 by 80, we get 3 and a remainder of 0.
Use 3 as the next digit of our solution. 
Result so far: 1289.3
If we take 240 away from 240, 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.

Moving on to step 8:
0 divided by 80 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 1289.3
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 9:
The number 80 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 1289.3
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 quotient of the division is 1289.3, and the remainder is 0.0.