We divide 56406251 by 20
Let's see how many times 20 fits into 56406251.

On to step 1:
When dividing 5 by 20, we get 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Fetch the next digit (6) from the dividend, attach it to 5 and continue: 56 / 20

On to step 2:
20 can be fit into 56 2 times, resulting in a remainder of 16.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Deduct 40 from 56 and we're left with 16.
Include the next digit (4) from the dividend after 16, then repeat: 164 / 20

Let's proceed to step 3:
164 divided by 20 is 8 with a remainder of 4.
The number 8 becomes the next digit in our result. 
Result so far: 28.0
If we take 160 away from 164, we end up with 4.
Append the next digit (0) from the dividend to 4 and continue with: 40 / 20

Let's proceed to step 4:
20 can be fit into 40 2 times, resulting in a remainder of 0.
Write down 2 as next digit of the result. 
Result so far: 282.0
The remainder is 0 after subtracting 40 from 40.
Bring next digit (6) of the dividend behind the 0 and repeat the process: 6 / 20

Going ahead to step 5:
20 goes into 6 0 times with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 2820.0
If we take 0 away from 6, we end up with 6.
Grab the next digit (2) from the dividend, add it to 6, then carry on: 62 / 20

Moving on to step 6:
20 goes into 62 3 times with a remainder of 2.
Write down 3 as next digit of the result. 
Result so far: 28203.0
If we subtract 60 from 62, we get 2.
Append the next digit (5) from the dividend to 2 and continue with: 25 / 20

On to step 7:
When dividing 25 by 20, we get 1 with a remainder of 5.
The number 1 becomes the next digit in our result. 
Result so far: 282031.0
Subtract 20 from 25 to get 5.
Include the next digit (1) from the dividend after 5, then repeat: 51 / 20

Let's proceed to step 8:
20 can be fit into 51 2 times, resulting in a remainder of 11.
Write down 2 as next digit of the result. 
Result so far: 2820312.0
If we take 40 away from 51, we end up 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 9:
The number 20 fits into 110 5 times, leaving a remainder of 10.
Write down 5 as next digit of the result. 
Result so far: 2820312.5
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.

Advancing to step 10:
When dividing 100 by 20, we get 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 2820312.55
Subtract 100 from 100 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 2820312.55, with a leftover of 0.0.