818515 ÷ 80 
We want to divide 818515 by 80.

On to step 1:
The number 80 fits into 8 0 times, leaving a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Fetch the next digit (1) from the dividend, attach it to 8 and continue: 81 / 80

Advancing to step 2:
The number 80 fits into 81 1 times, leaving a remainder of 1.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 80 away from 81, we end up with 1.
Grab the next digit (8) from the dividend, add it to 1, then carry on: 18 / 80

On to step 3:
80 goes into 18 0 times with a remainder of 18.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
Subtract 0 from 18 to get 18.
Grab the next digit (5) from the dividend, add it to 18, then carry on: 185 / 80

On to step 4:
80 goes into 185 2 times with a remainder of 25.
The next digit of our result is 2. 
Result so far: 102.0
If we subtract 160 from 185, we get 25.
Include the next digit (1) from the dividend after 25, then repeat: 251 / 80

Advancing to step 5:
If we divide 251 by 80, we get 3 and a remainder of 11.
Put 3 as the next digit of the answer. 
Result so far: 1023.0
If we subtract 240 from 251, we get 11.
Append the next digit (5) from the dividend to 11 and continue with: 115 / 80

On to step 6:
The number 80 fits into 115 1 times, leaving a remainder of 35.
Write down 1 as next digit of the result. 
Result so far: 10231.0
If we take 80 away from 115, we end up with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Advancing to step 7:
When dividing 350 by 80, we get 4 with a remainder of 30.
Use 4 as the next digit of our solution. 
Result so far: 10231.4
Deduct 320 from 350 and we're left 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.

Let's proceed to step 8:
The number 80 fits into 300 3 times, leaving a remainder of 60.
Put 3 as the next digit of the answer. 
Result so far: 10231.43
If we take 240 away from 300, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 9:
The number 80 fits into 600 7 times, leaving a remainder of 40.
Put 7 as the next digit of the answer. 
Result so far: 10231.437
If we subtract 560 from 600, we 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.

Step 10:
80 can be fit into 400 5 times, resulting in a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 10231.4375
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:
The number 80 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 10231.4375
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 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 10231.4375
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.

In conclusion, the division gives 10231.4375 with a balance of 0.0.