121490 ÷ 80 
We want to divide 121490 by 80.

Let's proceed to step 1:
80 goes into 1 0 times with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 80

Going ahead to step 2:
The number 80 fits into 12 0 times, leaving a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 12 to get 12.
Fetch the next digit (1) from the dividend, attach it to 12 and continue: 121 / 80

Let's proceed to step 3:
80 can be fit into 121 1 times, resulting in a remainder of 41.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 80 from 121 to get 41.
Fetch the next digit (4) from the dividend, attach it to 41 and continue: 414 / 80

Let's proceed to step 4:
If we divide 414 by 80, we get 5 and a remainder of 14.
Use 5 as the next digit of our solution. 
Result so far: 15.0
Deduct 400 from 414 and we're left with 14.
Fetch the next digit (9) from the dividend, attach it to 14 and continue: 149 / 80

Step 5:
If we divide 149 by 80, we get 1 and a remainder of 69.
The next digit of our result is 1. 
Result so far: 151.0
Deduct 80 from 149 and we're left with 69.
Fetch the next digit (0) from the dividend, attach it to 69 and continue: 690 / 80

On to step 6:
80 can be fit into 690 8 times, resulting in a remainder of 50.
Record the quotient 8 as the next digit in the result. 
Result so far: 1518.0
If we subtract 640 from 690, we 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.

Let's proceed to step 7:
When dividing 500 by 80, we get 6 with a remainder of 20.
The next digit of our result is 6. 
Result so far: 1518.6
Subtract 480 from 500 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 8:
80 can be fit into 200 2 times, resulting in a remainder of 40.
The number 2 becomes the next digit in our result. 
Result so far: 1518.62
Deduct 160 from 200 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 9:
When dividing 400 by 80, we get 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 1518.625
Subtracting 400 from 400 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 10:
0 divided by 80 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 1518.625
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.

Let's proceed to step 11:
0 divided by 80 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 1518.625
Deduct 0 from 0 and we're left 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 1518.625 with a remainder of 0.0.