Find the decimal equivalent of the following number shown in expanded form.

4 x 1,000 + 5 x 100 + 3 x 10 + 9 x 1 + 4 x 1/10 + 2 x 1/100 + 5 x 1/1000

A

4,539.425

B

4,539,425

C

45,394.25

D

4,359.425

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