51260605 ÷ 80 
Our goal is to divide 51260605 by 80.

Let's proceed to step 1:
80 goes into 5 0 times with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Append the next digit (1) from the dividend to 5 and continue with: 51 / 80

Moving on to step 2:
The number 80 fits into 51 0 times, leaving a remainder of 51.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 51 after subtracting 0 from 51.
Take the next digit (2) from the dividend and append it to 51, then repeat: 512 / 80

Going ahead to step 3:
When dividing 512 by 80, we get 6 with a remainder of 32.
Put 6 as the next digit of the answer. 
Result so far: 6.0
If we subtract 480 from 512, we get 32.
Grab the next digit (6) from the dividend, add it to 32, then carry on: 326 / 80

Step 4:
80 goes into 326 4 times with a remainder of 6.
Record the quotient 4 as the next digit in the result. 
Result so far: 64.0
The remainder is 6 after subtracting 320 from 326.
Fetch the next digit (0) from the dividend, attach it to 6 and continue: 60 / 80

Let's proceed to step 5:
80 goes into 60 0 times with a remainder of 60.
Write down 0 as next digit of the result. 
Result so far: 640.0
If we subtract 0 from 60, we get 60.
Fetch the next digit (6) from the dividend, attach it to 60 and continue: 606 / 80

Advancing to step 6:
If we divide 606 by 80, we get 7 and a remainder of 46.
Put 7 as the next digit of the answer. 
Result so far: 6407.0
If we subtract 560 from 606, we get 46.
Grab the next digit (0) from the dividend, add it to 46, then carry on: 460 / 80

Going ahead to step 7:
80 can be fit into 460 5 times, resulting in a remainder of 60.
Record the quotient 5 as the next digit in the result. 
Result so far: 64075.0
Deduct 400 from 460 and we're left with 60.
Include the next digit (5) from the dividend after 60, then repeat: 605 / 80

Step 8:
The number 80 fits into 605 7 times, leaving a remainder of 45.
The number 7 becomes the next digit in our result. 
Result so far: 640757.0
Subtracting 560 from 605 leaves us with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

On to step 9:
When dividing 450 by 80, we get 5 with a remainder of 50.
Put 5 as the next digit of the answer. 
Result so far: 640757.5
If we take 400 away from 450, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 10:
80 goes into 500 6 times with a remainder of 20.
The number 6 becomes the next digit in our result. 
Result so far: 640757.56
Subtracting 480 from 500 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 11:
The number 80 fits into 200 2 times, leaving a remainder of 40.
The next digit of our result is 2. 
Result so far: 640757.562
The remainder is 40 after subtracting 160 from 200.
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 12:
400 divided by 80 is 5 with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 640757.5625
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.

Step 13:
If we divide 0 by 80, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 640757.5625
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.

Moving on to step 14:
The number 80 fits into 0 0 times, leaving a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 640757.5625
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.

In conclusion, the division gives 640757.5625 with a balance of 0.0.