We divide 80978689 by 10
We want to divide 80978689 by 10.

Going ahead to step 1:
10 can be fit into 8 0 times, resulting in a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Grab the next digit (0) from the dividend, add it to 8, then carry on: 80 / 10

Advancing to step 2:
If we divide 80 by 10, we get 8 and a remainder of 0.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
The remainder is 0 after subtracting 80 from 80.
Include the next digit (9) from the dividend after 0, then repeat: 9 / 10

On to step 3:
When dividing 9 by 10, we get 0 with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 80.0
Deduct 0 from 9 and we're left with 9.
Fetch the next digit (7) from the dividend, attach it to 9 and continue: 97 / 10

Let's proceed to step 4:
10 can be fit into 97 9 times, resulting in a remainder of 7.
Record the quotient 9 as the next digit in the result. 
Result so far: 809.0
The remainder is 7 after subtracting 90 from 97.
Fetch the next digit (8) from the dividend, attach it to 7 and continue: 78 / 10

Advancing to step 5:
10 goes into 78 7 times with a remainder of 8.
The next digit of our result is 7. 
Result so far: 8097.0
Deduct 70 from 78 and we're left with 8.
Fetch the next digit (6) from the dividend, attach it to 8 and continue: 86 / 10

Moving on to step 6:
10 can be fit into 86 8 times, resulting in a remainder of 6.
Use 8 as the next digit of our solution. 
Result so far: 80978.0
If we take 80 away from 86, we end up with 6.
Bring next digit (8) of the dividend behind the 6 and repeat the process: 68 / 10

Advancing to step 7:
When dividing 68 by 10, we get 6 with a remainder of 8.
The number 6 becomes the next digit in our result. 
Result so far: 809786.0
Subtract 60 from 68 to get 8.
Grab the next digit (9) from the dividend, add it to 8, then carry on: 89 / 10

Moving on to step 8:
The number 10 fits into 89 8 times, leaving a remainder of 9.
Write down 8 as next digit of the result. 
Result so far: 8097868.0
Deduct 80 from 89 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 9:
The number 10 fits into 90 9 times, leaving a remainder of 0.
The next digit of our result is 9. 
Result so far: 8097868.9
If we subtract 90 from 90, 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.

Let's proceed to step 10:
If we divide 0 by 10, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 8097868.9
Subtracting 0 from 0 leaves us 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:
The number 10 fits into 0 0 times, leaving a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 8097868.9
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 quotient of the division is 8097868.9, and the remainder is 0.0.