121649 ÷ 80 
We want to divide 121649 by 80.

Advancing to step 1:
If we divide 1 by 80, we get 0 and a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 80

Going ahead to step 2:
If we divide 12 by 80, we get 0 and a remainder of 12.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 12, we end up with 12.
Include the next digit (1) from the dividend after 12, then repeat: 121 / 80

Moving on to step 3:
The number 80 fits into 121 1 times, leaving a remainder of 41.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 80 from 121 and we're left with 41.
Append the next digit (6) from the dividend to 41 and continue with: 416 / 80

Advancing to step 4:
If we divide 416 by 80, we get 5 and a remainder of 16.
Use 5 as the next digit of our solution. 
Result so far: 15.0
If we take 400 away from 416, we end up with 16.
Include the next digit (4) from the dividend after 16, then repeat: 164 / 80

On to step 5:
When dividing 164 by 80, we get 2 with a remainder of 4.
Record the quotient 2 as the next digit in the result. 
Result so far: 152.0
Subtracting 160 from 164 leaves us with 4.
Include the next digit (9) from the dividend after 4, then repeat: 49 / 80

Going ahead to step 6:
When dividing 49 by 80, we get 0 with a remainder of 49.
Write down 0 as next digit of the result. 
Result so far: 1520.0
If we subtract 0 from 49, we get 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Let's proceed to step 7:
80 can be fit into 490 6 times, resulting in a remainder of 10.
The next digit of our result is 6. 
Result so far: 1520.6
Deduct 480 from 490 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 8:
80 can be fit into 100 1 times, resulting in a remainder of 20.
Use 1 as the next digit of our solution. 
Result so far: 1520.61
Subtract 80 from 100 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 9:
200 divided by 80 is 2 with a remainder of 40.
The next digit of our result is 2. 
Result so far: 1520.612
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 10:
80 can be fit into 400 5 times, resulting in a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 1520.6125
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.

Going ahead 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: 1520.6125
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.

Let's proceed to step 12:
The number 80 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 1520.6125
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 1520.6125, and the remainder is 0.0.