961821 divided by 80 
Our goal is to divide 961821 by 80.

Moving on to step 1:
The number 80 fits into 9 0 times, leaving a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Include the next digit (6) from the dividend after 9, then repeat: 96 / 80

Let's proceed to step 2:
If we divide 96 by 80, we get 1 and a remainder of 16.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 80 from 96, we get 16.
Grab the next digit (1) from the dividend, add it to 16, then carry on: 161 / 80

Advancing to step 3:
If we divide 161 by 80, we get 2 and a remainder of 1.
The next digit of our result is 2. 
Result so far: 12.0
Deduct 160 from 161 and we're left with 1.
Take the next digit (8) from the dividend and append it to 1, then repeat: 18 / 80

Advancing to step 4:
If we divide 18 by 80, we get 0 and a remainder of 18.
The number 0 becomes the next digit in our result. 
Result so far: 120.0
Subtract 0 from 18 to get 18.
Include the next digit (2) from the dividend after 18, then repeat: 182 / 80

Going ahead to step 5:
182 divided by 80 is 2 with a remainder of 22.
Use 2 as the next digit of our solution. 
Result so far: 1202.0
Deduct 160 from 182 and we're left with 22.
Take the next digit (1) from the dividend and append it to 22, then repeat: 221 / 80

Step 6:
When dividing 221 by 80, we get 2 with a remainder of 61.
The next digit of our result is 2. 
Result so far: 12022.0
Deduct 160 from 221 and we're left with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Let's proceed to step 7:
80 goes into 610 7 times with a remainder of 50.
Write down 7 as next digit of the result. 
Result so far: 12022.7
If we take 560 away from 610, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 8:
The number 80 fits into 500 6 times, leaving a remainder of 20.
Put 6 as the next digit of the answer. 
Result so far: 12022.76
If we subtract 480 from 500, we 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.

Going ahead to step 9:
If we divide 200 by 80, we get 2 and a remainder of 40.
Put 2 as the next digit of the answer. 
Result so far: 12022.762
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:
If we divide 400 by 80, we get 5 and a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 12022.7625
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.
The number 0 becomes the next digit in our result. 
Result so far: 12022.7625
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:
80 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 12022.7625
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.

After the division, we end up with 12022.7625 and a remainder of 0.0.