Answer:
(70x10^-4) x (60 x 10^6) = 420000
so the answer would be
420000
Explanation:
(70 x 10^-4) x (60 x 10^6) = (70 x ( x x x )) x ( 60 x 1000000)
= 70 x x 60000000 = 420000
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