Let's divide 578158 by 80
We want to figure out the number of times 578158 can be divided by 80.

On to step 1:
5 divided by 80 is 0 with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Grab the next digit (7) from the dividend, add it to 5, then carry on: 57 / 80

Going ahead to step 2:
80 can be fit into 57 0 times, resulting in a remainder of 57.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 57 and we're left with 57.
Bring next digit (8) of the dividend behind the 57 and repeat the process: 578 / 80

Advancing to step 3:
The number 80 fits into 578 7 times, leaving a remainder of 18.
Write down 7 as next digit of the result. 
Result so far: 7.0
If we subtract 560 from 578, we get 18.
Take the next digit (1) from the dividend and append it to 18, then repeat: 181 / 80

Let's proceed to step 4:
80 goes into 181 2 times with a remainder of 21.
Use 2 as the next digit of our solution. 
Result so far: 72.0
Subtracting 160 from 181 leaves us with 21.
Include the next digit (5) from the dividend after 21, then repeat: 215 / 80

Step 5:
80 goes into 215 2 times with a remainder of 55.
Write down 2 as next digit of the result. 
Result so far: 722.0
Subtract 160 from 215 to get 55.
Append the next digit (8) from the dividend to 55 and continue with: 558 / 80

Step 6:
80 can be fit into 558 6 times, resulting in a remainder of 78.
Write down 6 as next digit of the result. 
Result so far: 7226.0
Subtracting 480 from 558 leaves us with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

On to step 7:
80 can be fit into 780 9 times, resulting in a remainder of 60.
The next digit of our result is 9. 
Result so far: 7226.9
Subtract 720 from 780 to get 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 8:
80 can be fit into 600 7 times, resulting in a remainder of 40.
The next digit of our result is 7. 
Result so far: 7226.97
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.

Going ahead to step 9:
When dividing 400 by 80, we get 5 with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 7226.975
Subtract 400 from 400 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.

Moving on to step 10:
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: 7226.975
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.

Let's proceed to step 11:
If we divide 0 by 80, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 7226.975
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 7226.975, with a leftover of 0.0.