Let's divide 861739 by 80
We want to figure out the number of times 861739 can be divided by 80.

Let's proceed to step 1:
When dividing 8 by 80, we get 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Fetch the next digit (6) from the dividend, attach it to 8 and continue: 86 / 80

Moving on to step 2:
86 divided by 80 is 1 with a remainder of 6.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 80 from 86, we get 6.
Include the next digit (1) from the dividend after 6, then repeat: 61 / 80

Going ahead to step 3:
The number 80 fits into 61 0 times, leaving a remainder of 61.
Write down 0 as next digit of the result. 
Result so far: 10.0
The remainder is 61 after subtracting 0 from 61.
Fetch the next digit (7) from the dividend, attach it to 61 and continue: 617 / 80

Step 4:
80 can be fit into 617 7 times, resulting in a remainder of 57.
Record the quotient 7 as the next digit in the result. 
Result so far: 107.0
Subtract 560 from 617 to get 57.
Fetch the next digit (3) from the dividend, attach it to 57 and continue: 573 / 80

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: 1077.0
Deduct 560 from 573 and we're left with 13.
Bring next digit (9) of the dividend behind the 13 and repeat the process: 139 / 80

Going ahead to step 6:
The number 80 fits into 139 1 times, leaving a remainder of 59.
The next digit of our result is 1. 
Result so far: 10771.0
Deduct 80 from 139 and we're left with 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Advancing 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: 10771.7
Subtract 560 from 590 to 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.

Advancing to step 8:
80 can be fit into 300 3 times, resulting in a remainder of 60.
The next digit of our result is 3. 
Result so far: 10771.73
Deduct 240 from 300 and we're left 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.

Let's proceed to step 9:
When dividing 600 by 80, we get 7 with a remainder of 40.
The next digit of our result is 7. 
Result so far: 10771.737
Subtracting 560 from 600 leaves us with 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:
When dividing 400 by 80, we get 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 10771.7375
Deduct 400 from 400 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.

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: 10771.7375
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:
0 divided by 80 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 10771.7375
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.

In conclusion, the division gives 10771.7375 with a balance of 0.0.