854570 divided by 80 
Our goal is to divide 854570 by 80.

Step 1:
If we divide 8 by 80, we get 0 and a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Grab the next digit (5) from the dividend, add it to 8, then carry on: 85 / 80

On to step 2:
80 can be fit into 85 1 times, resulting in a remainder of 5.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 80 from 85, we get 5.
Fetch the next digit (4) from the dividend, attach it to 5 and continue: 54 / 80

Step 3:
If we divide 54 by 80, we get 0 and a remainder of 54.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
If we take 0 away from 54, we end up with 54.
Fetch the next digit (5) from the dividend, attach it to 54 and continue: 545 / 80

Going ahead to step 4:
The number 80 fits into 545 6 times, leaving a remainder of 65.
Record the quotient 6 as the next digit in the result. 
Result so far: 106.0
The remainder is 65 after subtracting 480 from 545.
Include the next digit (7) from the dividend after 65, then repeat: 657 / 80

Step 5:
80 can be fit into 657 8 times, resulting in a remainder of 17.
Write down 8 as next digit of the result. 
Result so far: 1068.0
Subtract 640 from 657 to get 17.
Include the next digit (0) from the dividend after 17, then repeat: 170 / 80

On to step 6:
If we divide 170 by 80, we get 2 and a remainder of 10.
The next digit of our result is 2. 
Result so far: 10682.0
The remainder is 10 after subtracting 160 from 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 7:
80 can be fit into 100 1 times, resulting in a remainder of 20.
Record the quotient 1 as the next digit in the result. 
Result so far: 10682.1
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 8:
When dividing 200 by 80, we get 2 with a remainder of 40.
Record the quotient 2 as the next digit in the result. 
Result so far: 10682.12
Subtract 160 from 200 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.

Going ahead to step 9:
400 divided by 80 is 5 with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 10682.125
If we take 400 away from 400, we end up 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:
When dividing 0 by 80, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 10682.125
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.

On to step 11:
If we divide 0 by 80, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 10682.125
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 final outcome is 10682.125, with a leftover of 0.0.