21049740 ÷ 204 
Let's see how many times 204 fits into 21049740.

On to step 1:
The number 204 fits into 2 0 times, leaving a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 204

Let's proceed to step 2:
If we divide 21 by 204, we get 0 and a remainder of 21.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Include the next digit (0) from the dividend after 21, then repeat: 210 / 204

Going ahead to step 3:
If we divide 210 by 204, we get 1 and a remainder of 6.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 204 from 210 leaves us with 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 204

Step 4:
When dividing 64 by 204, we get 0 with a remainder of 64.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
Subtract 0 from 64 to get 64.
Append the next digit (9) from the dividend to 64 and continue with: 649 / 204

Going ahead to step 5:
If we divide 649 by 204, we get 3 and a remainder of 37.
The number 3 becomes the next digit in our result. 
Result so far: 103.0
If we take 612 away from 649, we end up with 37.
Grab the next digit (7) from the dividend, add it to 37, then carry on: 377 / 204

Going ahead to step 6:
204 goes into 377 1 times with a remainder of 173.
Write down 1 as next digit of the result. 
Result so far: 1031.0
Subtracting 204 from 377 leaves us with 173.
Grab the next digit (4) from the dividend, add it to 173, then carry on: 1734 / 204

Advancing to step 7:
When dividing 1734 by 204, we get 8 with a remainder of 102.
Put 8 as the next digit of the answer. 
Result so far: 10318.0
Deduct 1632 from 1734 and we're left with 102.
Bring next digit (0) of the dividend behind the 102 and repeat the process: 1020 / 204

Let's proceed to step 8:
When dividing 1020 by 204, we get 5 with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 103185.0
If we take 1020 away from 1020, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 9:
204 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 103185.0
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 10:
204 can be fit into 0 0 times, resulting in a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 103185.0
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 103185.0 and a remainder of 0.0.