81508610 ÷ 580 
We're looking to find how many times 580 goes into 81508610.

Advancing to step 1:
The number 580 fits into 8 0 times, leaving a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Fetch the next digit (1) from the dividend, attach it to 8 and continue: 81 / 580

On to step 2:
580 goes into 81 0 times with a remainder of 81.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 81, we end up with 81.
Take the next digit (5) from the dividend and append it to 81, then repeat: 815 / 580

Advancing to step 3:
580 can be fit into 815 1 times, resulting in a remainder of 235.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 580 from 815, we get 235.
Grab the next digit (0) from the dividend, add it to 235, then carry on: 2350 / 580

Moving on to step 4:
The number 580 fits into 2350 4 times, leaving a remainder of 30.
Put 4 as the next digit of the answer. 
Result so far: 14.0
If we subtract 2320 from 2350, we get 30.
Fetch the next digit (8) from the dividend, attach it to 30 and continue: 308 / 580

Moving on to step 5:
580 goes into 308 0 times with a remainder of 308.
Put 0 as the next digit of the answer. 
Result so far: 140.0
If we take 0 away from 308, we end up with 308.
Fetch the next digit (6) from the dividend, attach it to 308 and continue: 3086 / 580

Step 6:
3086 divided by 580 is 5 with a remainder of 186.
Put 5 as the next digit of the answer. 
Result so far: 1405.0
If we subtract 2900 from 3086, we get 186.
Grab the next digit (1) from the dividend, add it to 186, then carry on: 1861 / 580

Going ahead to step 7:
If we divide 1861 by 580, we get 3 and a remainder of 121.
Write down 3 as next digit of the result. 
Result so far: 14053.0
If we subtract 1740 from 1861, we get 121.
Append the next digit (0) from the dividend to 121 and continue with: 1210 / 580

Moving on to step 8:
When dividing 1210 by 580, we get 2 with a remainder of 50.
Put 2 as the next digit of the answer. 
Result so far: 140532.0
If we subtract 1160 from 1210, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 9:
580 can be fit into 500 0 times, resulting in a remainder of 500.
Use 0 as the next digit of our solution. 
Result so far: 140532.0
Subtracting 0 from 500 leaves us with 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

Advancing to step 10:
The number 580 fits into 5000 8 times, leaving a remainder of 360.
Record the quotient 8 as the next digit in the result. 
Result so far: 140532.08
If we subtract 4640 from 5000, we get 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Step 11:
580 can be fit into 3600 6 times, resulting in a remainder of 120.
Use 6 as the next digit of our solution. 
Result so far: 140532.086
If we subtract 3480 from 3600, we get 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Moving on to step 12:
The number 580 fits into 1200 2 times, leaving a remainder of 40.
Put 2 as the next digit of the answer. 
Result so far: 140532.0862
Deduct 1160 from 1200 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.

Going ahead to step 13:
When dividing 400 by 580, we get 0 with a remainder of 400.
The number 0 becomes the next digit in our result. 
Result so far: 140532.0862
If we take 0 away from 400, we end up with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

On to step 14:
580 goes into 4000 6 times with a remainder of 520.
Record the quotient 6 as the next digit in the result. 
Result so far: 140532.086206
If we take 3480 away from 4000, we end up with 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5200, and continue the process.

Moving on to step 15:
580 goes into 5200 8 times with a remainder of 560.
Use 8 as the next digit of our solution. 
Result so far: 140532.0862068
The remainder is 560 after subtracting 4640 from 5200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

Let's proceed to step 16:
The number 580 fits into 5600 9 times, leaving a remainder of 380.
Record the quotient 9 as the next digit in the result. 
Result so far: 140532.08620689
Subtract 5220 from 5600 to get 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

The final result is 140532.08620689 with a remainder of 3.8e-07.