624571 ÷ 20 
We want to figure out the number of times 624571 can be divided by 20.

On to step 1:
If we divide 6 by 20, we get 0 and a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Append the next digit (2) from the dividend to 6 and continue with: 62 / 20

Let's proceed to step 2:
When dividing 62 by 20, we get 3 with a remainder of 2.
Write down 3 as next digit of the result. 
Result so far: 3.0
If we subtract 60 from 62, we get 2.
Include the next digit (4) from the dividend after 2, then repeat: 24 / 20

Advancing to step 3:
20 can be fit into 24 1 times, resulting in a remainder of 4.
Record the quotient 1 as the next digit in the result. 
Result so far: 31.0
Subtracting 20 from 24 leaves us with 4.
Include the next digit (5) from the dividend after 4, then repeat: 45 / 20

Going ahead to step 4:
20 can be fit into 45 2 times, resulting in a remainder of 5.
Record the quotient 2 as the next digit in the result. 
Result so far: 312.0
The remainder is 5 after subtracting 40 from 45.
Append the next digit (7) from the dividend to 5 and continue with: 57 / 20

Going ahead to step 5:
The number 20 fits into 57 2 times, leaving a remainder of 17.
Put 2 as the next digit of the answer. 
Result so far: 3122.0
Subtracting 40 from 57 leaves us with 17.
Grab the next digit (1) from the dividend, add it to 17, then carry on: 171 / 20

Advancing to step 6:
If we divide 171 by 20, we get 8 and a remainder of 11.
The number 8 becomes the next digit in our result. 
Result so far: 31228.0
Subtracting 160 from 171 leaves us with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Let's proceed to step 7:
20 can be fit into 110 5 times, resulting in a remainder of 10.
Write down 5 as next digit of the result. 
Result so far: 31228.5
If we subtract 100 from 110, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 8:
20 goes into 100 5 times with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 31228.55
Deduct 100 from 100 and we're left 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.

Our division results in 31228.55 with a remaining 0.0.