577313 ÷ 20 
We're looking to find how many times 20 goes into 577313.

Step 1:
20 can be fit into 5 0 times, resulting in a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Bring next digit (7) of the dividend behind the 5 and repeat the process: 57 / 20

Moving on to step 2:
20 goes into 57 2 times with a remainder of 17.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we subtract 40 from 57, we get 17.
Fetch the next digit (7) from the dividend, attach it to 17 and continue: 177 / 20

Step 3:
20 goes into 177 8 times with a remainder of 17.
Record the quotient 8 as the next digit in the result. 
Result so far: 28.0
If we take 160 away from 177, we end up with 17.
Take the next digit (3) from the dividend and append it to 17, then repeat: 173 / 20

Going ahead to step 4:
20 goes into 173 8 times with a remainder of 13.
Use 8 as the next digit of our solution. 
Result so far: 288.0
Subtract 160 from 173 to get 13.
Include the next digit (1) from the dividend after 13, then repeat: 131 / 20

Let's proceed to step 5:
If we divide 131 by 20, we get 6 and a remainder of 11.
Record the quotient 6 as the next digit in the result. 
Result so far: 2886.0
Subtracting 120 from 131 leaves us with 11.
Grab the next digit (3) from the dividend, add it to 11, then carry on: 113 / 20

Moving on to step 6:
The number 20 fits into 113 5 times, leaving a remainder of 13.
Write down 5 as next digit of the result. 
Result so far: 28865.0
Subtract 100 from 113 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Step 7:
When dividing 130 by 20, we get 6 with a remainder of 10.
Record the quotient 6 as the next digit in the result. 
Result so far: 28865.6
Deduct 120 from 130 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 8:
20 can be fit into 100 5 times, resulting in a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 28865.65
If we subtract 100 from 100, 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 9:
The number 20 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 28865.65
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.

Step 10:
If we divide 0 by 20, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 28865.65
Deduct 0 from 0 and we're left 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 result is 28865.65 with a remainder of 0.0.