Let's divide 915891 by 80
Our goal is to divide 915891 by 80.

Going ahead to step 1:
The number 80 fits into 9 0 times, leaving a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Take the next digit (1) from the dividend and append it to 9, then repeat: 91 / 80

Going ahead to step 2:
80 goes into 91 1 times with a remainder of 11.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 80 from 91, we get 11.
Bring next digit (5) of the dividend behind the 11 and repeat the process: 115 / 80

Let's proceed to step 3:
80 can be fit into 115 1 times, resulting in a remainder of 35.
Write down 1 as next digit of the result. 
Result so far: 11.0
If we take 80 away from 115, we end up with 35.
Fetch the next digit (8) from the dividend, attach it to 35 and continue: 358 / 80

Let's proceed to step 4:
If we divide 358 by 80, we get 4 and a remainder of 38.
The number 4 becomes the next digit in our result. 
Result so far: 114.0
The remainder is 38 after subtracting 320 from 358.
Take the next digit (9) from the dividend and append it to 38, then repeat: 389 / 80

Advancing to step 5:
80 can be fit into 389 4 times, resulting in a remainder of 69.
Record the quotient 4 as the next digit in the result. 
Result so far: 1144.0
If we subtract 320 from 389, we get 69.
Append the next digit (1) from the dividend to 69 and continue with: 691 / 80

On to step 6:
If we divide 691 by 80, we get 8 and a remainder of 51.
Put 8 as the next digit of the answer. 
Result so far: 11448.0
Subtracting 640 from 691 leaves us with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

On to step 7:
If we divide 510 by 80, we get 6 and a remainder of 30.
Record the quotient 6 as the next digit in the result. 
Result so far: 11448.6
If we take 480 away from 510, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 8:
300 divided by 80 is 3 with a remainder of 60.
Record the quotient 3 as the next digit in the result. 
Result so far: 11448.63
If we subtract 240 from 300, we 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.

Advancing to step 9:
When dividing 600 by 80, we get 7 with a remainder of 40.
The number 7 becomes the next digit in our result. 
Result so far: 11448.637
Subtract 560 from 600 to 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.

Let's proceed 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: 11448.6375
The remainder is 0 after subtracting 400 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

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: 11448.6375
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.

Step 12:
If we divide 0 by 80, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 11448.6375
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.

The quotient of the division is 11448.6375, and the remainder is 0.0.