Let's divide 81220090 by 580
Let's see how many times 580 fits into 81220090.

Advancing to step 1:
If we divide 8 by 580, we get 0 and a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Grab the next digit (1) from the dividend, add it to 8, then carry on: 81 / 580

Going ahead to step 2:
When dividing 81 by 580, we get 0 with a remainder of 81.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 81, we end up with 81.
Include the next digit (2) from the dividend after 81, then repeat: 812 / 580

On to step 3:
580 goes into 812 1 times with a remainder of 232.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 580 from 812 leaves us with 232.
Append the next digit (2) from the dividend to 232 and continue with: 2322 / 580

Going ahead to step 4:
580 can be fit into 2322 4 times, resulting in a remainder of 2.
Write down 4 as next digit of the result. 
Result so far: 14.0
If we subtract 2320 from 2322, we get 2.
Grab the next digit (0) from the dividend, add it to 2, then carry on: 20 / 580

Going ahead to step 5:
580 can be fit into 20 0 times, resulting in a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 140.0
If we subtract 0 from 20, we get 20.
Include the next digit (0) from the dividend after 20, then repeat: 200 / 580

Step 6:
If we divide 200 by 580, we get 0 and a remainder of 200.
Write down 0 as next digit of the result. 
Result so far: 1400.0
If we take 0 away from 200, we end up with 200.
Take the next digit (9) from the dividend and append it to 200, then repeat: 2009 / 580

Advancing to step 7:
When dividing 2009 by 580, we get 3 with a remainder of 269.
Put 3 as the next digit of the answer. 
Result so far: 14003.0
If we subtract 1740 from 2009, we get 269.
Grab the next digit (0) from the dividend, add it to 269, then carry on: 2690 / 580

Let's proceed to step 8:
580 goes into 2690 4 times with a remainder of 370.
The number 4 becomes the next digit in our result. 
Result so far: 140034.0
If we take 2320 away from 2690, we end up with 370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3700, and continue the process.

On to step 9:
When dividing 3700 by 580, we get 6 with a remainder of 220.
The next digit of our result is 6. 
Result so far: 140034.6
If we take 3480 away from 3700, we end up with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Advancing to step 10:
580 goes into 2200 3 times with a remainder of 460.
Put 3 as the next digit of the answer. 
Result so far: 140034.63
The remainder is 460 after subtracting 1740 from 2200.
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 11:
4600 divided by 580 is 7 with a remainder of 540.
The number 7 becomes the next digit in our result. 
Result so far: 140034.637
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.

Advancing to step 12:
580 goes into 5400 9 times with a remainder of 180.
Use 9 as the next digit of our solution. 
Result so far: 140034.6379
If we subtract 5220 from 5400, we get 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Going ahead to step 13:
If we divide 1800 by 580, we get 3 and a remainder of 60.
Record the quotient 3 as the next digit in the result. 
Result so far: 140034.63793
The remainder is 60 after subtracting 1740 from 1800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 14:
580 goes into 600 1 times with a remainder of 20.
Put 1 as the next digit of the answer. 
Result so far: 140034.637931
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.

Going ahead to step 15:
580 can be fit into 200 0 times, resulting in a remainder of 200.
The next digit of our result is 0. 
Result so far: 140034.637931
Subtract 0 from 200 to 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 16:
580 can be fit into 2000 3 times, resulting in a remainder of 260.
Use 3 as the next digit of our solution. 
Result so far: 140034.63793103
The remainder is 260 after subtracting 1740 from 2000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

The final result is 140034.63793103 with a remainder of 2.6e-07.