978039 divided by 80 
Let's see how many times 80 fits into 978039.

On to step 1:
80 can be fit into 9 0 times, resulting in a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Append the next digit (7) from the dividend to 9 and continue with: 97 / 80

Step 2:
The number 80 fits into 97 1 times, leaving a remainder of 17.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 17 after subtracting 80 from 97.
Grab the next digit (8) from the dividend, add it to 17, then carry on: 178 / 80

On to step 3:
If we divide 178 by 80, we get 2 and a remainder of 18.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
Subtract 160 from 178 to get 18.
Append the next digit (0) from the dividend to 18 and continue with: 180 / 80

Moving on to step 4:
The number 80 fits into 180 2 times, leaving a remainder of 20.
Put 2 as the next digit of the answer. 
Result so far: 122.0
Deduct 160 from 180 and we're left with 20.
Grab the next digit (3) from the dividend, add it to 20, then carry on: 203 / 80

Moving on to step 5:
When dividing 203 by 80, we get 2 with a remainder of 43.
Write down 2 as next digit of the result. 
Result so far: 1222.0
Subtracting 160 from 203 leaves us with 43.
Take the next digit (9) from the dividend and append it to 43, then repeat: 439 / 80

Advancing to step 6:
80 can be fit into 439 5 times, resulting in a remainder of 39.
The number 5 becomes the next digit in our result. 
Result so far: 12225.0
If we subtract 400 from 439, we get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Let's proceed to step 7:
80 can be fit into 390 4 times, resulting in a remainder of 70.
The number 4 becomes the next digit in our result. 
Result so far: 12225.4
Deduct 320 from 390 and we're left with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Advancing to step 8:
700 divided by 80 is 8 with a remainder of 60.
Record the quotient 8 as the next digit in the result. 
Result so far: 12225.48
Deduct 640 from 700 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.

Advancing 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: 12225.487
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.

Step 10:
If we divide 400 by 80, we get 5 and a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 12225.4875
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.

On to step 11:
80 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 12225.4875
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.

Step 12:
80 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 12225.4875
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 quotient of the division is 12225.4875, and the remainder is 0.0.