YOU SAID:
if you clean a vacuum cleaner, you become the vacuum cleaner.
INTO JAPANESE
掃除機を掃除すると、掃除機になります。
BACK INTO ENGLISH
When cleaning the vacuum cleaner, it becomes a vacuum cleaner.
INTO JAPANESE
掃除機を掃除するときは、掃除機になります。
BACK INTO ENGLISH
When cleaning the vacuum cleaner, it becomes a vacuum cleaner.
That didn't even make that much sense in English.