Verified Answer :

4sh247

20,484,163
= 20,000,000 + 400,000 + 80,000 + 4,000 + 100 + 60 + 3

So in expanded form you would write it like this.. 
20,000,000 + 400,000 + 80,000 + 4,000 + 100 + 60 + 3 = 20,484,163 

Good Luck! :)