We look at the division of 21495985 by 508 
We want to figure out the number of times 21495985 can be divided by 508.

Moving on to step 1:
When dividing 2 by 508, we get 0 with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 508

Step 2:
The number 508 fits into 21 0 times, leaving a remainder of 21.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 21, we end up with 21.
Fetch the next digit (4) from the dividend, attach it to 21 and continue: 214 / 508

Advancing to step 3:
The number 508 fits into 214 0 times, leaving a remainder of 214.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 214 to get 214.
Append the next digit (9) from the dividend to 214 and continue with: 2149 / 508

Let's proceed to step 4:
508 goes into 2149 4 times with a remainder of 117.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Subtracting 2032 from 2149 leaves us with 117.
Bring next digit (5) of the dividend behind the 117 and repeat the process: 1175 / 508

Advancing to step 5:
508 goes into 1175 2 times with a remainder of 159.
Record the quotient 2 as the next digit in the result. 
Result so far: 42.0
Deduct 1016 from 1175 and we're left with 159.
Grab the next digit (9) from the dividend, add it to 159, then carry on: 1599 / 508

Advancing to step 6:
508 can be fit into 1599 3 times, resulting in a remainder of 75.
Record the quotient 3 as the next digit in the result. 
Result so far: 423.0
Subtracting 1524 from 1599 leaves us with 75.
Take the next digit (8) from the dividend and append it to 75, then repeat: 758 / 508

Moving on to step 7:
508 can be fit into 758 1 times, resulting in a remainder of 250.
The number 1 becomes the next digit in our result. 
Result so far: 4231.0
Deduct 508 from 758 and we're left with 250.
Append the next digit (5) from the dividend to 250 and continue with: 2505 / 508

Going ahead to step 8:
508 goes into 2505 4 times with a remainder of 473.
Write down 4 as next digit of the result. 
Result so far: 42314.0
Subtracting 2032 from 2505 leaves us with 473.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4730, and continue the process.

Moving on to step 9:
508 goes into 4730 9 times with a remainder of 158.
Put 9 as the next digit of the answer. 
Result so far: 42314.9
If we take 4572 away from 4730, we end up with 158.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1580, and continue the process.

Going ahead to step 10:
508 can be fit into 1580 3 times, resulting in a remainder of 56.
The number 3 becomes the next digit in our result. 
Result so far: 42314.93
Deduct 1524 from 1580 and we're left with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Let's proceed to step 11:
The number 508 fits into 560 1 times, leaving a remainder of 52.
Record the quotient 1 as the next digit in the result. 
Result so far: 42314.931
The remainder is 52 after subtracting 508 from 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Advancing to step 12:
508 goes into 520 1 times with a remainder of 12.
Use 1 as the next digit of our solution. 
Result so far: 42314.9311
If we take 508 away from 520, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final outcome is 42314.9311, with a leftover of 0.00012.