81487560 ÷ 580 
Our goal is to divide 81487560 by 580.

Let's proceed to step 1:
When dividing 8 by 580, we get 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Grab the next digit (1) from the dividend, add it to 8, then carry on: 81 / 580

Step 2:
81 divided by 580 is 0 with a remainder of 81.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 81 leaves us with 81.
Grab the next digit (4) from the dividend, add it to 81, then carry on: 814 / 580

On to step 3:
814 divided by 580 is 1 with a remainder of 234.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 580 from 814 to get 234.
Bring next digit (8) of the dividend behind the 234 and repeat the process: 2348 / 580

Moving on to step 4:
When dividing 2348 by 580, we get 4 with a remainder of 28.
Record the quotient 4 as the next digit in the result. 
Result so far: 14.0
If we take 2320 away from 2348, we end up with 28.
Include the next digit (7) from the dividend after 28, then repeat: 287 / 580

On to step 5:
287 divided by 580 is 0 with a remainder of 287.
Use 0 as the next digit of our solution. 
Result so far: 140.0
If we subtract 0 from 287, we get 287.
Grab the next digit (5) from the dividend, add it to 287, then carry on: 2875 / 580

Let's proceed to step 6:
The number 580 fits into 2875 4 times, leaving a remainder of 555.
The number 4 becomes the next digit in our result. 
Result so far: 1404.0
Subtracting 2320 from 2875 leaves us with 555.
Append the next digit (6) from the dividend to 555 and continue with: 5556 / 580

Step 7:
When dividing 5556 by 580, we get 9 with a remainder of 336.
Record the quotient 9 as the next digit in the result. 
Result so far: 14049.0
Deduct 5220 from 5556 and we're left with 336.
Grab the next digit (0) from the dividend, add it to 336, then carry on: 3360 / 580

Advancing to step 8:
580 can be fit into 3360 5 times, resulting in a remainder of 460.
Put 5 as the next digit of the answer. 
Result so far: 140495.0
Deduct 2900 from 3360 and we're left with 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

On to step 9:
580 goes into 4600 7 times with a remainder of 540.
Record the quotient 7 as the next digit in the result. 
Result so far: 140495.7
Deduct 4060 from 4600 and we're left with 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5400, and continue the process.

Step 10:
The number 580 fits into 5400 9 times, leaving a remainder of 180.
The number 9 becomes the next digit in our result. 
Result so far: 140495.79
The remainder is 180 after subtracting 5220 from 5400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

On to step 11:
When dividing 1800 by 580, we get 3 with a remainder of 60.
Record the quotient 3 as the next digit in the result. 
Result so far: 140495.793
Subtract 1740 from 1800 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.

Advancing to step 12:
The number 580 fits into 600 1 times, leaving a remainder of 20.
The number 1 becomes the next digit in our result. 
Result so far: 140495.7931
Deduct 580 from 600 and we're left 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.

Step 13:
200 divided by 580 is 0 with a remainder of 200.
Record the quotient 0 as the next digit in the result. 
Result so far: 140495.7931
If we subtract 0 from 200, we get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Going ahead to step 14:
580 goes into 2000 3 times with a remainder of 260.
Put 3 as the next digit of the answer. 
Result so far: 140495.793103
Subtract 1740 from 2000 to get 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Going ahead to step 15:
2600 divided by 580 is 4 with a remainder of 280.
The number 4 becomes the next digit in our result. 
Result so far: 140495.7931034
The remainder is 280 after subtracting 2320 from 2600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Let's proceed to step 16:
2800 divided by 580 is 4 with a remainder of 480.
The next digit of our result is 4. 
Result so far: 140495.79310344
Deduct 2320 from 2800 and we're left with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

The final outcome is 140495.79310344, with a leftover of 4.8e-07.