If you mean making them a regular number, you add them all.
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But, the expanded form of this is
1,000,000 - Millions Place
200,000 - Hundred Thousands
50,000 -Ten Thousands
4,000 -Thousands
300 - Hundreds
80 -Tens
9 - Ones
I hope this helps, if it doesn't let me know and I'll do my best.
