We look at the division of 557783 by 21 
We want to figure out the number of times 557783 can be divided by 21.

On to step 1:
If we divide 5 by 21, we get 0 and a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Fetch the next digit (5) from the dividend, attach it to 5 and continue: 55 / 21

Step 2:
21 can be fit into 55 2 times, resulting in a remainder of 13.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we take 42 away from 55, we end up with 13.
Bring next digit (7) of the dividend behind the 13 and repeat the process: 137 / 21

Moving on to step 3:
21 goes into 137 6 times with a remainder of 11.
Put 6 as the next digit of the answer. 
Result so far: 26.0
The remainder is 11 after subtracting 126 from 137.
Include the next digit (7) from the dividend after 11, then repeat: 117 / 21

Moving on to step 4:
117 divided by 21 is 5 with a remainder of 12.
Write down 5 as next digit of the result. 
Result so far: 265.0
If we take 105 away from 117, we end up with 12.
Take the next digit (8) from the dividend and append it to 12, then repeat: 128 / 21

Let's proceed to step 5:
21 can be fit into 128 6 times, resulting in a remainder of 2.
Put 6 as the next digit of the answer. 
Result so far: 2656.0
If we take 126 away from 128, we end up with 2.
Take the next digit (3) from the dividend and append it to 2, then repeat: 23 / 21

On to step 6:
The number 21 fits into 23 1 times, leaving a remainder of 2.
The next digit of our result is 1. 
Result so far: 26561.0
Subtract 21 from 23 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 7:
If we divide 20 by 21, we get 0 and a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 26561.0
The remainder is 20 after subtracting 0 from 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 8:
If we divide 200 by 21, we get 9 and a remainder of 11.
Put 9 as the next digit of the answer. 
Result so far: 26561.09
The remainder is 11 after subtracting 189 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Going ahead to step 9:
If we divide 110 by 21, we get 5 and a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 26561.095
The remainder is 5 after subtracting 105 from 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 10:
If we divide 50 by 21, we get 2 and a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 26561.0952
Subtract 42 from 50 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 11:
When dividing 80 by 21, we get 3 with a remainder of 17.
The number 3 becomes the next digit in our result. 
Result so far: 26561.09523
The remainder is 17 after subtracting 63 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Let's proceed to step 12:
If we divide 170 by 21, we get 8 and a remainder of 2.
The number 8 becomes the next digit in our result. 
Result so far: 26561.095238
The remainder is 2 after subtracting 168 from 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 13:
20 divided by 21 is 0 with a remainder of 20.
The next digit of our result is 0. 
Result so far: 26561.095238
Deduct 0 from 20 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.

Let's proceed to step 14:
When dividing 200 by 21, we get 9 with a remainder of 11.
Record the quotient 9 as the next digit in the result. 
Result so far: 26561.09523809
If we take 189 away from 200, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

The quotient of the division is 26561.09523809, and the remainder is 1.1e-08.