We're dividing 511150 by 21 
We want to divide 511150 by 21.

Step 1:
21 can be fit into 5 0 times, resulting in a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Take the next digit (1) from the dividend and append it to 5, then repeat: 51 / 21

On to step 2:
21 goes into 51 2 times with a remainder of 9.
The next digit of our result is 2. 
Result so far: 2.0
If we take 42 away from 51, we end up with 9.
Include the next digit (1) from the dividend after 9, then repeat: 91 / 21

Moving on to step 3:
91 divided by 21 is 4 with a remainder of 7.
The number 4 becomes the next digit in our result. 
Result so far: 24.0
The remainder is 7 after subtracting 84 from 91.
Append the next digit (1) from the dividend to 7 and continue with: 71 / 21

On to step 4:
When dividing 71 by 21, we get 3 with a remainder of 8.
Record the quotient 3 as the next digit in the result. 
Result so far: 243.0
Subtract 63 from 71 to get 8.
Bring next digit (5) of the dividend behind the 8 and repeat the process: 85 / 21

Let's proceed to step 5:
21 goes into 85 4 times with a remainder of 1.
Put 4 as the next digit of the answer. 
Result so far: 2434.0
The remainder is 1 after subtracting 84 from 85.
Grab the next digit (0) from the dividend, add it to 1, then carry on: 10 / 21

Step 6:
10 divided by 21 is 0 with a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 24340.0
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.

Moving on to step 7:
100 divided by 21 is 4 with a remainder of 16.
The number 4 becomes the next digit in our result. 
Result so far: 24340.4
If we take 84 away from 100, we end up 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 8:
The number 21 fits into 160 7 times, leaving a remainder of 13.
Put 7 as the next digit of the answer. 
Result so far: 24340.47
If we take 147 away from 160, we end up 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.

Going ahead to step 9:
21 goes into 130 6 times with a remainder of 4.
The next digit of our result is 6. 
Result so far: 24340.476
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.

Step 10:
When dividing 40 by 21, we get 1 with a remainder of 19.
Use 1 as the next digit of our solution. 
Result so far: 24340.4761
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.

Let's proceed to step 11:
21 goes into 190 9 times with a remainder of 1.
The next digit of our result is 9. 
Result so far: 24340.47619
The remainder is 1 after subtracting 189 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 12:
21 goes into 10 0 times with a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 24340.47619
Subtracting 0 from 10 leaves us 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.

Advancing to step 13:
21 can be fit into 100 4 times, resulting in a remainder of 16.
Put 4 as the next digit of the answer. 
Result so far: 24340.4761904
Deduct 84 from 100 and we're left 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 14:
21 can be fit into 160 7 times, resulting in a remainder of 13.
Put 7 as the next digit of the answer. 
Result so far: 24340.47619047
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.

The quotient of the division is 24340.47619047, and the remainder is 1.3e-08.