Verified Answer :

164,502,423 minus 100,000 = 164402423 

i hope i helped!

This is very basic math.. 

Here is the answer you should have gotten : \(164, 402, 423\) 

And the way you can do this is just by subtraction "1" hundred thousand from the "5" hundred thousand which makes it "4" hundred thousand.. 

Hope this Helps.. :)