233519 ÷ 21 
Let's see how many times 21 fits into 233519.

Advancing to step 1:
The number 21 fits into 2 0 times, leaving a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Grab the next digit (3) from the dividend, add it to 2, then carry on: 23 / 21

Going ahead to step 2:
When dividing 23 by 21, we get 1 with a remainder of 2.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 21 away from 23, we end up with 2.
Fetch the next digit (3) from the dividend, attach it to 2 and continue: 23 / 21

Step 3:
If we divide 23 by 21, we get 1 and a remainder of 2.
Use 1 as the next digit of our solution. 
Result so far: 11.0
Subtracting 21 from 23 leaves us with 2.
Bring next digit (5) of the dividend behind the 2 and repeat the process: 25 / 21

Step 4:
21 goes into 25 1 times with a remainder of 4.
Record the quotient 1 as the next digit in the result. 
Result so far: 111.0
If we subtract 21 from 25, we get 4.
Fetch the next digit (1) from the dividend, attach it to 4 and continue: 41 / 21

Going ahead to step 5:
41 divided by 21 is 1 with a remainder of 20.
Record the quotient 1 as the next digit in the result. 
Result so far: 1111.0
Subtracting 21 from 41 leaves us with 20.
Bring next digit (9) of the dividend behind the 20 and repeat the process: 209 / 21

On to step 6:
The number 21 fits into 209 9 times, leaving a remainder of 20.
Write down 9 as next digit of the result. 
Result so far: 11119.0
If we take 189 away from 209, we end up 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.

Step 7:
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: 11119.9
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.

Let's proceed to step 8:
110 divided by 21 is 5 with a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 11119.95
If we subtract 105 from 110, we get 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 9:
The number 21 fits into 50 2 times, leaving a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 11119.952
Subtracting 42 from 50 leaves us 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.

Moving on to step 10:
The number 21 fits into 80 3 times, leaving a remainder of 17.
The next digit of our result is 3. 
Result so far: 11119.9523
Deduct 63 from 80 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Moving on to step 11:
21 goes into 170 8 times with a remainder of 2.
Use 8 as the next digit of our solution. 
Result so far: 11119.95238
If we take 168 away from 170, we end up 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.

On to step 12:
When dividing 20 by 21, we get 0 with a remainder of 20.
The next digit of our result is 0. 
Result so far: 11119.95238
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.

On to step 13:
200 divided by 21 is 9 with a remainder of 11.
Record the quotient 9 as the next digit in the result. 
Result so far: 11119.9523809
Subtract 189 from 200 to get 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 14:
The number 21 fits into 110 5 times, leaving a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 11119.95238095
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.

In conclusion, the division gives 11119.95238095 with a balance of 5e-09.