We're dividing 813739 by 80 
We're looking to find how many times 80 goes into 813739.

Going ahead to step 1:
When dividing 8 by 80, we get 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Append the next digit (1) from the dividend to 8 and continue with: 81 / 80

Step 2:
80 goes into 81 1 times with a remainder of 1.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 1 after subtracting 80 from 81.
Take the next digit (3) from the dividend and append it to 1, then repeat: 13 / 80

Let's proceed to step 3:
80 can be fit into 13 0 times, resulting in a remainder of 13.
Write down 0 as next digit of the result. 
Result so far: 10.0
Subtract 0 from 13 to get 13.
Append the next digit (7) from the dividend to 13 and continue with: 137 / 80

Going ahead to step 4:
When dividing 137 by 80, we get 1 with a remainder of 57.
The next digit of our result is 1. 
Result so far: 101.0
If we take 80 away from 137, we end up with 57.
Include the next digit (3) from the dividend after 57, then repeat: 573 / 80

Let's proceed to step 5:
80 can be fit into 573 7 times, resulting in a remainder of 13.
Put 7 as the next digit of the answer. 
Result so far: 1017.0
Subtract 560 from 573 to get 13.
Fetch the next digit (9) from the dividend, attach it to 13 and continue: 139 / 80

Moving on to step 6:
80 can be fit into 139 1 times, resulting in a remainder of 59.
Put 1 as the next digit of the answer. 
Result so far: 10171.0
Subtract 80 from 139 to get 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Moving on to step 7:
When dividing 590 by 80, we get 7 with a remainder of 30.
Use 7 as the next digit of our solution. 
Result so far: 10171.7
If we subtract 560 from 590, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 8:
If we divide 300 by 80, we get 3 and a remainder of 60.
Use 3 as the next digit of our solution. 
Result so far: 10171.73
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.

On to step 9:
600 divided by 80 is 7 with a remainder of 40.
The next digit of our result is 7. 
Result so far: 10171.737
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.

Advancing to step 10:
80 goes into 400 5 times with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 10171.7375
If we subtract 400 from 400, 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.

Moving on to step 11:
80 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 10171.7375
Deduct 0 from 0 and we're left 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.

Moving on to step 12:
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: 10171.7375
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.

The final outcome is 10171.7375, with a leftover of 0.0.