We look at the division of 303265 by 21 
We're looking to find how many times 21 goes into 303265.

Moving on to step 1:
If we divide 3 by 21, we get 0 and a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Fetch the next digit (0) from the dividend, attach it to 3 and continue: 30 / 21

On to step 2:
The number 21 fits into 30 1 times, leaving a remainder of 9.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 9 after subtracting 21 from 30.
Grab the next digit (3) from the dividend, add it to 9, then carry on: 93 / 21

Going ahead to step 3:
When dividing 93 by 21, we get 4 with a remainder of 9.
Use 4 as the next digit of our solution. 
Result so far: 14.0
The remainder is 9 after subtracting 84 from 93.
Take the next digit (2) from the dividend and append it to 9, then repeat: 92 / 21

Moving on to step 4:
21 goes into 92 4 times with a remainder of 8.
Use 4 as the next digit of our solution. 
Result so far: 144.0
Subtract 84 from 92 to get 8.
Grab the next digit (6) from the dividend, add it to 8, then carry on: 86 / 21

Advancing to step 5:
When dividing 86 by 21, we get 4 with a remainder of 2.
The number 4 becomes the next digit in our result. 
Result so far: 1444.0
If we subtract 84 from 86, we get 2.
Append the next digit (5) from the dividend to 2 and continue with: 25 / 21

Moving on to step 6:
If we divide 25 by 21, we get 1 and a remainder of 4.
The next digit of our result is 1. 
Result so far: 14441.0
Subtract 21 from 25 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 7:
When dividing 40 by 21, we get 1 with a remainder of 19.
Record the quotient 1 as the next digit in the result. 
Result so far: 14441.1
Subtract 21 from 40 to get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 8:
If we divide 190 by 21, we get 9 and a remainder of 1.
Record the quotient 9 as the next digit in the result. 
Result so far: 14441.19
If we subtract 189 from 190, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 9:
10 divided by 21 is 0 with a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 14441.19
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 10:
21 can be fit into 100 4 times, resulting in a remainder of 16.
Write down 4 as next digit of the result. 
Result so far: 14441.1904
Subtracting 84 from 100 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 11:
160 divided by 21 is 7 with a remainder of 13.
The next digit of our result is 7. 
Result so far: 14441.19047
Deduct 147 from 160 and we're left with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Let's proceed to step 12:
The number 21 fits into 130 6 times, leaving a remainder of 4.
Write down 6 as next digit of the result. 
Result so far: 14441.190476
If we take 126 away from 130, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 13:
40 divided by 21 is 1 with a remainder of 19.
The next digit of our result is 1. 
Result so far: 14441.1904761
The remainder is 19 after subtracting 21 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 14:
If we divide 190 by 21, we get 9 and a remainder of 1.
Write down 9 as next digit of the result. 
Result so far: 14441.19047619
If we take 189 away from 190, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

In conclusion, the division gives 14441.19047619 with a balance of 1e-09.