We look at the division of 545753 by 21 
Let's see how many times 21 fits into 545753.

On to step 1:
21 goes into 5 0 times with a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Take the next digit (4) from the dividend and append it to 5, then repeat: 54 / 21

Going ahead to step 2:
54 divided by 21 is 2 with a remainder of 12.
The next digit of our result is 2. 
Result so far: 2.0
If we subtract 42 from 54, we get 12.
Fetch the next digit (5) from the dividend, attach it to 12 and continue: 125 / 21

Let's proceed to step 3:
The number 21 fits into 125 5 times, leaving a remainder of 20.
Put 5 as the next digit of the answer. 
Result so far: 25.0
If we take 105 away from 125, we end up with 20.
Fetch the next digit (7) from the dividend, attach it to 20 and continue: 207 / 21

Step 4:
If we divide 207 by 21, we get 9 and a remainder of 18.
The next digit of our result is 9. 
Result so far: 259.0
If we take 189 away from 207, we end up with 18.
Include the next digit (5) from the dividend after 18, then repeat: 185 / 21

Going ahead to step 5:
21 goes into 185 8 times with a remainder of 17.
Put 8 as the next digit of the answer. 
Result so far: 2598.0
The remainder is 17 after subtracting 168 from 185.
Bring next digit (3) of the dividend behind the 17 and repeat the process: 173 / 21

Let's proceed to step 6:
When dividing 173 by 21, we get 8 with a remainder of 5.
Use 8 as the next digit of our solution. 
Result so far: 25988.0
The remainder is 5 after subtracting 168 from 173.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 7:
When dividing 50 by 21, we get 2 with a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 25988.2
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.

Moving on to step 8:
80 divided by 21 is 3 with a remainder of 17.
Use 3 as the next digit of our solution. 
Result so far: 25988.23
Subtract 63 from 80 to get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Going ahead to step 9:
170 divided by 21 is 8 with a remainder of 2.
The number 8 becomes the next digit in our result. 
Result so far: 25988.238
Deduct 168 from 170 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 10:
21 can be fit into 20 0 times, resulting in a remainder of 20.
The next digit of our result is 0. 
Result so far: 25988.238
Subtract 0 from 20 to get 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 11:
When dividing 200 by 21, we get 9 with a remainder of 11.
Use 9 as the next digit of our solution. 
Result so far: 25988.23809
Subtracting 189 from 200 leaves us 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.

Moving on to step 12:
If we divide 110 by 21, we get 5 and a remainder of 5.
The next digit of our result is 5. 
Result so far: 25988.238095
If we take 105 away from 110, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 13:
21 goes into 50 2 times with a remainder of 8.
Use 2 as the next digit of our solution. 
Result so far: 25988.2380952
Deduct 42 from 50 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 14:
21 goes into 80 3 times with a remainder of 17.
The next digit of our result is 3. 
Result so far: 25988.23809523
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.

The quotient of the division is 25988.23809523, and the remainder is 1.7e-08.