We divide 77451 by 80
We're looking to find how many times 80 goes into 77451.

Let's proceed to step 1:
7 divided by 80 is 0 with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Grab the next digit (7) from the dividend, add it to 7, then carry on: 77 / 80

Moving on to step 2:
77 divided by 80 is 0 with a remainder of 77.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 77, we get 77.
Fetch the next digit (4) from the dividend, attach it to 77 and continue: 774 / 80

Advancing to step 3:
80 goes into 774 9 times with a remainder of 54.
Use 9 as the next digit of our solution. 
Result so far: 9.0
If we take 720 away from 774, we end up with 54.
Include the next digit (5) from the dividend after 54, then repeat: 545 / 80

Moving on to step 4:
545 divided by 80 is 6 with a remainder of 65.
Write down 6 as next digit of the result. 
Result so far: 96.0
If we subtract 480 from 545, we get 65.
Fetch the next digit (1) from the dividend, attach it to 65 and continue: 651 / 80

Moving on to step 5:
651 divided by 80 is 8 with a remainder of 11.
Write down 8 as next digit of the result. 
Result so far: 968.0
Deduct 640 from 651 and we're left with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Going ahead to step 6:
80 can be fit into 110 1 times, resulting in a remainder of 30.
Put 1 as the next digit of the answer. 
Result so far: 968.1
Deduct 80 from 110 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 7:
300 divided by 80 is 3 with a remainder of 60.
Record the quotient 3 as the next digit in the result. 
Result so far: 968.13
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.

Going ahead 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: 968.137
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.

Let's proceed to step 9:
80 goes into 400 5 times with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 968.1375
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.

On to step 10:
0 divided by 80 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 968.1375
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.

Going ahead to step 11:
When dividing 0 by 80, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 968.1375
If we take 0 away from 0, 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.

The final outcome is 968.1375, with a leftover of 0.0.