21575053 ÷ 502 
Let's see how many times 502 fits into 21575053.

Advancing to step 1:
If we divide 2 by 502, we get 0 and a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 502

On to step 2:
502 can be fit into 21 0 times, resulting in a remainder of 21.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Bring next digit (5) of the dividend behind the 21 and repeat the process: 215 / 502

Step 3:
502 goes into 215 0 times with a remainder of 215.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 215 to get 215.
Bring next digit (7) of the dividend behind the 215 and repeat the process: 2157 / 502

Let's proceed to step 4:
502 goes into 2157 4 times with a remainder of 149.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Subtract 2008 from 2157 to get 149.
Fetch the next digit (5) from the dividend, attach it to 149 and continue: 1495 / 502

Going ahead to step 5:
1495 divided by 502 is 2 with a remainder of 491.
Write down 2 as next digit of the result. 
Result so far: 42.0
Subtract 1004 from 1495 to get 491.
Include the next digit (0) from the dividend after 491, then repeat: 4910 / 502

On to step 6:
502 goes into 4910 9 times with a remainder of 392.
The next digit of our result is 9. 
Result so far: 429.0
If we subtract 4518 from 4910, we get 392.
Append the next digit (5) from the dividend to 392 and continue with: 3925 / 502

Moving on to step 7:
When dividing 3925 by 502, we get 7 with a remainder of 411.
Put 7 as the next digit of the answer. 
Result so far: 4297.0
The remainder is 411 after subtracting 3514 from 3925.
Include the next digit (3) from the dividend after 411, then repeat: 4113 / 502

Let's proceed to step 8:
4113 divided by 502 is 8 with a remainder of 97.
Use 8 as the next digit of our solution. 
Result so far: 42978.0
The remainder is 97 after subtracting 4016 from 4113.
Since there are no more digits in the dividend, we add a zero to the remainder making it 970, and continue the process.

Advancing to step 9:
If we divide 970 by 502, we get 1 and a remainder of 468.
Put 1 as the next digit of the answer. 
Result so far: 42978.1
If we take 502 away from 970, we end up with 468.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4680, and continue the process.

Let's proceed to step 10:
4680 divided by 502 is 9 with a remainder of 162.
Put 9 as the next digit of the answer. 
Result so far: 42978.19
Deduct 4518 from 4680 and we're left with 162.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1620, and continue the process.

Advancing to step 11:
If we divide 1620 by 502, we get 3 and a remainder of 114.
Write down 3 as next digit of the result. 
Result so far: 42978.193
The remainder is 114 after subtracting 1506 from 1620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

On to step 12:
If we divide 1140 by 502, we get 2 and a remainder of 136.
Write down 2 as next digit of the result. 
Result so far: 42978.1932
Subtracting 1004 from 1140 leaves us with 136.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1360, and continue the process.

Moving on to step 13:
1360 divided by 502 is 2 with a remainder of 356.
The number 2 becomes the next digit in our result. 
Result so far: 42978.19322
Subtracting 1004 from 1360 leaves us with 356.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3560, and continue the process.

After the division, we end up with 42978.19322 and a remainder of 0.000356.