YOU SAID:
how many bathtubs does lena have?
INTO JAPANESE
レナは何個の浴槽を持っていますか?
BACK INTO ENGLISH
How many bathtubs does Lena have?
INTO JAPANESE
レナは何本の浴槽を持っていますか?
BACK INTO ENGLISH
How many bathtubs does Lena have?
That didn't even make that much sense in English.