We look at the division of 77821357 by 573 
We're looking to find how many times 573 goes into 77821357.

Step 1:
573 can be fit into 7 0 times, resulting in a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Take the next digit (7) from the dividend and append it to 7, then repeat: 77 / 573

Going ahead to step 2:
When dividing 77 by 573, we get 0 with a remainder of 77.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 77 leaves us with 77.
Include the next digit (8) from the dividend after 77, then repeat: 778 / 573

Step 3:
573 goes into 778 1 times with a remainder of 205.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 573 from 778 and we're left with 205.
Bring next digit (2) of the dividend behind the 205 and repeat the process: 2052 / 573

Let's proceed to step 4:
573 goes into 2052 3 times with a remainder of 333.
Use 3 as the next digit of our solution. 
Result so far: 13.0
Subtract 1719 from 2052 to get 333.
Append the next digit (1) from the dividend to 333 and continue with: 3331 / 573

Advancing to step 5:
3331 divided by 573 is 5 with a remainder of 466.
The next digit of our result is 5. 
Result so far: 135.0
Subtracting 2865 from 3331 leaves us with 466.
Include the next digit (3) from the dividend after 466, then repeat: 4663 / 573

Let's proceed to step 6:
573 goes into 4663 8 times with a remainder of 79.
Write down 8 as next digit of the result. 
Result so far: 1358.0
If we take 4584 away from 4663, we end up with 79.
Append the next digit (5) from the dividend to 79 and continue with: 795 / 573

Let's proceed to step 7:
The number 573 fits into 795 1 times, leaving a remainder of 222.
The next digit of our result is 1. 
Result so far: 13581.0
Deduct 573 from 795 and we're left with 222.
Grab the next digit (7) from the dividend, add it to 222, then carry on: 2227 / 573

Advancing to step 8:
573 can be fit into 2227 3 times, resulting in a remainder of 508.
The next digit of our result is 3. 
Result so far: 135813.0
Deduct 1719 from 2227 and we're left with 508.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5080, and continue the process.

Let's proceed to step 9:
When dividing 5080 by 573, we get 8 with a remainder of 496.
Write down 8 as next digit of the result. 
Result so far: 135813.8
The remainder is 496 after subtracting 4584 from 5080.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4960, and continue the process.

Moving on to step 10:
The number 573 fits into 4960 8 times, leaving a remainder of 376.
Write down 8 as next digit of the result. 
Result so far: 135813.88
If we take 4584 away from 4960, we end up with 376.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3760, and continue the process.

The final result is 135813.88 with a remainder of 0.376.