We divide 437224 by 20
We're looking to find how many times 20 goes into 437224.

Moving on to step 1:
If we divide 4 by 20, we get 0 and a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Include the next digit (3) from the dividend after 4, then repeat: 43 / 20

Let's proceed to step 2:
43 divided by 20 is 2 with a remainder of 3.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtract 40 from 43 to get 3.
Fetch the next digit (7) from the dividend, attach it to 3 and continue: 37 / 20

Step 3:
The number 20 fits into 37 1 times, leaving a remainder of 17.
Write down 1 as next digit of the result. 
Result so far: 21.0
If we subtract 20 from 37, we get 17.
Take the next digit (2) from the dividend and append it to 17, then repeat: 172 / 20

Advancing to step 4:
172 divided by 20 is 8 with a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 218.0
If we take 160 away from 172, we end up with 12.
Grab the next digit (2) from the dividend, add it to 12, then carry on: 122 / 20

Moving on to step 5:
20 goes into 122 6 times with a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 2186.0
If we subtract 120 from 122, we get 2.
Take the next digit (4) from the dividend and append it to 2, then repeat: 24 / 20

Step 6:
The number 20 fits into 24 1 times, leaving a remainder of 4.
Use 1 as the next digit of our solution. 
Result so far: 21861.0
If we take 20 away from 24, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 7:
The number 20 fits into 40 2 times, leaving a remainder of 0.
The next digit of our result is 2. 
Result so far: 21861.2
If we subtract 40 from 40, we 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.

Advancing to step 8:
When dividing 0 by 20, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 21861.2
Subtracting 0 from 0 leaves us 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.

Moving on to step 9:
0 divided by 20 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 21861.2
Subtracting 0 from 0 leaves us 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.

The final outcome is 21861.2, with a leftover of 0.0.