Let's divide 285232 by 21
Let's see how many times 21 fits into 285232.

Step 1:
21 can be fit into 2 0 times, resulting in a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Take the next digit (8) from the dividend and append it to 2, then repeat: 28 / 21

Moving on to step 2:
21 goes into 28 1 times with a remainder of 7.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 21 from 28 leaves us with 7.
Include the next digit (5) from the dividend after 7, then repeat: 75 / 21

On to step 3:
75 divided by 21 is 3 with a remainder of 12.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
Subtract 63 from 75 to get 12.
Include the next digit (2) from the dividend after 12, then repeat: 122 / 21

Going ahead to step 4:
The number 21 fits into 122 5 times, leaving a remainder of 17.
Record the quotient 5 as the next digit in the result. 
Result so far: 135.0
If we take 105 away from 122, we end up with 17.
Bring next digit (3) of the dividend behind the 17 and repeat the process: 173 / 21

Moving on to step 5:
If we divide 173 by 21, we get 8 and a remainder of 5.
Use 8 as the next digit of our solution. 
Result so far: 1358.0
Subtract 168 from 173 to get 5.
Include the next digit (2) from the dividend after 5, then repeat: 52 / 21

Going ahead to step 6:
If we divide 52 by 21, we get 2 and a remainder of 10.
Record the quotient 2 as the next digit in the result. 
Result so far: 13582.0
The remainder is 10 after subtracting 42 from 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 7:
When dividing 100 by 21, we get 4 with a remainder of 16.
Put 4 as the next digit of the answer. 
Result so far: 13582.4
If we subtract 84 from 100, we get 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 8:
21 goes into 160 7 times with a remainder of 13.
The number 7 becomes the next digit in our result. 
Result so far: 13582.47
Subtract 147 from 160 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.

Going ahead to step 9:
When dividing 130 by 21, we get 6 with a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 13582.476
Subtract 126 from 130 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.

Advancing to step 10:
The number 21 fits into 40 1 times, leaving a remainder of 19.
The next digit of our result is 1. 
Result so far: 13582.4761
Deduct 21 from 40 and we're left with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

On to step 11:
190 divided by 21 is 9 with a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 13582.47619
Deduct 189 from 190 and we're left 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.

Advancing to step 12:
The number 21 fits into 10 0 times, leaving a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 13582.47619
If we take 0 away from 10, we end up 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.

Going ahead to step 13:
100 divided by 21 is 4 with a remainder of 16.
The next digit of our result is 4. 
Result so far: 13582.4761904
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.

On to step 14:
When dividing 160 by 21, we get 7 with a remainder of 13.
The next digit of our result is 7. 
Result so far: 13582.47619047
If we subtract 147 from 160, we 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.

The final result is 13582.47619047 with a remainder of 1.3e-08.