Let's divide 849529 by 21
We're looking to find how many times 21 goes into 849529.

On to step 1:
21 can be fit into 8 0 times, resulting in a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Grab the next digit (4) from the dividend, add it to 8, then carry on: 84 / 21

On to step 2:
If we divide 84 by 21, we get 4 and a remainder of 0.
The next digit of our result is 4. 
Result so far: 4.0
Deduct 84 from 84 and we're left with 0.
Grab the next digit (9) from the dividend, add it to 0, then carry on: 9 / 21

Moving on to step 3:
21 can be fit into 9 0 times, resulting in a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 40.0
If we take 0 away from 9, we end up with 9.
Append the next digit (5) from the dividend to 9 and continue with: 95 / 21

Let's proceed to step 4:
If we divide 95 by 21, we get 4 and a remainder of 11.
Put 4 as the next digit of the answer. 
Result so far: 404.0
Subtract 84 from 95 to get 11.
Take the next digit (2) from the dividend and append it to 11, then repeat: 112 / 21

Let's proceed to step 5:
If we divide 112 by 21, we get 5 and a remainder of 7.
Write down 5 as next digit of the result. 
Result so far: 4045.0
Subtracting 105 from 112 leaves us with 7.
Bring next digit (9) of the dividend behind the 7 and repeat the process: 79 / 21

On to step 6:
21 can be fit into 79 3 times, resulting in a remainder of 16.
The number 3 becomes the next digit in our result. 
Result so far: 40453.0
Subtract 63 from 79 to 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.

Moving on to step 7:
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: 40453.7
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.

Going ahead to step 8:
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: 40453.76
Deduct 126 from 130 and we're left 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 9:
When dividing 40 by 21, we get 1 with a remainder of 19.
The next digit of our result is 1. 
Result so far: 40453.761
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 10:
When dividing 190 by 21, we get 9 with a remainder of 1.
The next digit of our result is 9. 
Result so far: 40453.7619
Subtracting 189 from 190 leaves us 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.

Going ahead to step 11:
If we divide 10 by 21, we get 0 and a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 40453.7619
Deduct 0 from 10 and we're left 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.

Moving on to step 12:
The number 21 fits into 100 4 times, leaving a remainder of 16.
Write down 4 as next digit of the result. 
Result so far: 40453.761904
The remainder is 16 after subtracting 84 from 100.
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 13:
21 can be fit into 160 7 times, resulting in a remainder of 13.
Use 7 as the next digit of our solution. 
Result so far: 40453.7619047
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.

On to step 14:
130 divided by 21 is 6 with a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 40453.76190476
Subtracting 126 from 130 leaves us 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.

The final result is 40453.76190476 with a remainder of 4e-09.