We're dividing 21543132 by 509 
We're looking to find how many times 509 goes into 21543132.

Advancing to step 1:
509 goes into 2 0 times with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 509

Let's proceed to step 2:
509 can be fit into 21 0 times, resulting in a remainder of 21.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 21 to get 21.
Take the next digit (5) from the dividend and append it to 21, then repeat: 215 / 509

Going ahead to step 3:
When dividing 215 by 509, we get 0 with a remainder of 215.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 215 and we're left with 215.
Fetch the next digit (4) from the dividend, attach it to 215 and continue: 2154 / 509

Moving on to step 4:
509 can be fit into 2154 4 times, resulting in a remainder of 118.
Put 4 as the next digit of the answer. 
Result so far: 4.0
If we subtract 2036 from 2154, we get 118.
Include the next digit (3) from the dividend after 118, then repeat: 1183 / 509

On to step 5:
509 can be fit into 1183 2 times, resulting in a remainder of 165.
The number 2 becomes the next digit in our result. 
Result so far: 42.0
If we subtract 1018 from 1183, we get 165.
Include the next digit (1) from the dividend after 165, then repeat: 1651 / 509

Going ahead to step 6:
If we divide 1651 by 509, we get 3 and a remainder of 124.
Put 3 as the next digit of the answer. 
Result so far: 423.0
The remainder is 124 after subtracting 1527 from 1651.
Grab the next digit (3) from the dividend, add it to 124, then carry on: 1243 / 509

On to step 7:
When dividing 1243 by 509, we get 2 with a remainder of 225.
Use 2 as the next digit of our solution. 
Result so far: 4232.0
Deduct 1018 from 1243 and we're left with 225.
Append the next digit (2) from the dividend to 225 and continue with: 2252 / 509

Advancing to step 8:
When dividing 2252 by 509, we get 4 with a remainder of 216.
The next digit of our result is 4. 
Result so far: 42324.0
If we subtract 2036 from 2252, we get 216.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2160, and continue the process.

Step 9:
509 can be fit into 2160 4 times, resulting in a remainder of 124.
Put 4 as the next digit of the answer. 
Result so far: 42324.4
Deduct 2036 from 2160 and we're left with 124.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1240, and continue the process.

On to step 10:
When dividing 1240 by 509, we get 2 with a remainder of 222.
Write down 2 as next digit of the result. 
Result so far: 42324.42
The remainder is 222 after subtracting 1018 from 1240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2220, and continue the process.

Let's proceed to step 11:
The number 509 fits into 2220 4 times, leaving a remainder of 184.
Use 4 as the next digit of our solution. 
Result so far: 42324.424
Subtracting 2036 from 2220 leaves us with 184.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

Going ahead to step 12:
509 goes into 1840 3 times with a remainder of 313.
The number 3 becomes the next digit in our result. 
Result so far: 42324.4243
Deduct 1527 from 1840 and we're left with 313.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3130, and continue the process.

Step 13:
509 can be fit into 3130 6 times, resulting in a remainder of 76.
Record the quotient 6 as the next digit in the result. 
Result so far: 42324.42436
Deduct 3054 from 3130 and we're left with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Advancing to step 14:
509 goes into 760 1 times with a remainder of 251.
Write down 1 as next digit of the result. 
Result so far: 42324.424361
Deduct 509 from 760 and we're left with 251.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2510, and continue the process.

On to step 15:
If we divide 2510 by 509, we get 4 and a remainder of 474.
Use 4 as the next digit of our solution. 
Result so far: 42324.4243614
If we take 2036 away from 2510, we end up with 474.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4740, and continue the process.

Advancing to step 16:
When dividing 4740 by 509, we get 9 with a remainder of 159.
Write down 9 as next digit of the result. 
Result so far: 42324.42436149
Subtracting 4581 from 4740 leaves us with 159.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1590, and continue the process.

In conclusion, the division gives 42324.42436149 with a balance of 1.59e-07.