The conversation between human and AI assistant.
[|Human|] Based on this passage, how many Boeing 747s are required to ship 10 of ASML's best-selling EUVs?
[|AI|] The best-selling EUV is the Twinscan NXE:3600D, and it takes 3 Boeing 747s per EUV, so 30 Boeing 747s are required to ship ten Twinscan NXE:3600Ds.
[|Human|] 
Based on this passage, how many Boeing 747s are required to ship 10 of ASML's best-selling EUVs?