Mind blown- math

We are doing division with decimals (the whole unit is decimals but there’s little subsections) we are encouraged to use our calculators instead of doing it the long way. Well every time I went to divide. It would be wrong . I’d look at the answer key, then I would flip the numbers around and it’d be right. But then the next one id do it flipped around and it’d be wrong 😂I’ve never ever done division with decimals so I’m over here like wtf