We're dividing 21490353 by 503 
Let's see how many times 503 fits into 21490353.

Let's proceed to step 1:
When dividing 2 by 503, we get 0 with a remainder of 2.
Put 0 as the next digit of the answer. 
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 / 503

Step 2:
503 goes into 21 0 times with a remainder of 21.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Grab the next digit (4) from the dividend, add it to 21, then carry on: 214 / 503

Advancing to step 3:
214 divided by 503 is 0 with a remainder of 214.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 214, we get 214.
Append the next digit (9) from the dividend to 214 and continue with: 2149 / 503

Let's proceed to step 4:
If we divide 2149 by 503, we get 4 and a remainder of 137.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Deduct 2012 from 2149 and we're left with 137.
Include the next digit (0) from the dividend after 137, then repeat: 1370 / 503

On to step 5:
When dividing 1370 by 503, we get 2 with a remainder of 364.
Record the quotient 2 as the next digit in the result. 
Result so far: 42.0
Deduct 1006 from 1370 and we're left with 364.
Take the next digit (3) from the dividend and append it to 364, then repeat: 3643 / 503

Step 6:
503 goes into 3643 7 times with a remainder of 122.
The next digit of our result is 7. 
Result so far: 427.0
Deduct 3521 from 3643 and we're left with 122.
Append the next digit (5) from the dividend to 122 and continue with: 1225 / 503

Advancing to step 7:
1225 divided by 503 is 2 with a remainder of 219.
Write down 2 as next digit of the result. 
Result so far: 4272.0
If we subtract 1006 from 1225, we get 219.
Fetch the next digit (3) from the dividend, attach it to 219 and continue: 2193 / 503

Advancing to step 8:
503 can be fit into 2193 4 times, resulting in a remainder of 181.
Record the quotient 4 as the next digit in the result. 
Result so far: 42724.0
If we take 2012 away from 2193, we end up with 181.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1810, and continue the process.

Let's proceed to step 9:
503 goes into 1810 3 times with a remainder of 301.
Record the quotient 3 as the next digit in the result. 
Result so far: 42724.3
Subtracting 1509 from 1810 leaves us with 301.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3010, and continue the process.

On to step 10:
When dividing 3010 by 503, we get 5 with a remainder of 495.
Use 5 as the next digit of our solution. 
Result so far: 42724.35
The remainder is 495 after subtracting 2515 from 3010.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4950, and continue the process.

Going ahead to step 11:
If we divide 4950 by 503, we get 9 and a remainder of 423.
The next digit of our result is 9. 
Result so far: 42724.359
The remainder is 423 after subtracting 4527 from 4950.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4230, and continue the process.

Moving on to step 12:
503 can be fit into 4230 8 times, resulting in a remainder of 206.
Record the quotient 8 as the next digit in the result. 
Result so far: 42724.3598
If we take 4024 away from 4230, we end up with 206.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2060, and continue the process.

Moving on to step 13:
2060 divided by 503 is 4 with a remainder of 48.
Record the quotient 4 as the next digit in the result. 
Result so far: 42724.35984
Deduct 2012 from 2060 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Moving on to step 14:
The number 503 fits into 480 0 times, leaving a remainder of 480.
The next digit of our result is 0. 
Result so far: 42724.35984
If we take 0 away from 480, we end up with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Let's proceed to step 15:
The number 503 fits into 4800 9 times, leaving a remainder of 273.
Put 9 as the next digit of the answer. 
Result so far: 42724.3598409
Subtract 4527 from 4800 to get 273.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2730, and continue the process.

Step 16:
If we divide 2730 by 503, we get 5 and a remainder of 215.
The next digit of our result is 5. 
Result so far: 42724.35984095
Subtract 2515 from 2730 to get 215.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2150, and continue the process.

The final result is 42724.35984095 with a remainder of 2.15e-07.