712399 ÷ 80 
We're looking to find how many times 80 goes into 712399.

Let's proceed to step 1:
When dividing 7 by 80, we get 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Append the next digit (1) from the dividend to 7 and continue with: 71 / 80

Step 2:
The number 80 fits into 71 0 times, leaving a remainder of 71.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 71 and we're left with 71.
Append the next digit (2) from the dividend to 71 and continue with: 712 / 80

Advancing to step 3:
If we divide 712 by 80, we get 8 and a remainder of 72.
Put 8 as the next digit of the answer. 
Result so far: 8.0
If we take 640 away from 712, we end up with 72.
Include the next digit (3) from the dividend after 72, then repeat: 723 / 80

Let's proceed to step 4:
When dividing 723 by 80, we get 9 with a remainder of 3.
Record the quotient 9 as the next digit in the result. 
Result so far: 89.0
If we subtract 720 from 723, we get 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 80

Moving on to step 5:
When dividing 39 by 80, we get 0 with a remainder of 39.
Put 0 as the next digit of the answer. 
Result so far: 890.0
If we subtract 0 from 39, we get 39.
Append the next digit (9) from the dividend to 39 and continue with: 399 / 80

Moving on to step 6:
When dividing 399 by 80, we get 4 with a remainder of 79.
The number 4 becomes the next digit in our result. 
Result so far: 8904.0
Deduct 320 from 399 and we're left with 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Going ahead to step 7:
When dividing 790 by 80, we get 9 with a remainder of 70.
The next digit of our result is 9. 
Result so far: 8904.9
Deduct 720 from 790 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.

Let's proceed to step 8:
The number 80 fits into 700 8 times, leaving a remainder of 60.
Put 8 as the next digit of the answer. 
Result so far: 8904.98
Subtracting 640 from 700 leaves us 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.

Step 9:
600 divided by 80 is 7 with a remainder of 40.
The number 7 becomes the next digit in our result. 
Result so far: 8904.987
Deduct 560 from 600 and we're left 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.

Advancing to step 10:
80 can be fit into 400 5 times, resulting in a remainder of 0.
The next digit of our result is 5. 
Result so far: 8904.9875
If we take 400 away from 400, we end up 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 11:
0 divided by 80 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 8904.9875
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.

Moving on to step 12:
The number 80 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 8904.9875
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.

Our division results in 8904.9875 with a remaining 0.0.