Recently one month's production of sodium hydroxide in the US was 1.99 billion pounds. The density of sodium hydroxide is 2.130 g/cm³. What is the volume in cubic kilometers that were produced?

1.99E9 pounds = 9.03E11 grams. I looked that up on Google.

volume = mass/density = 9.03E11/2.130 g/cc = ? cc
Plug that number into Google to convert from ? cc (same as ? mL) to cubic kilometers.