Yeah, decimals do make it easier when you put it out like that, especially when comparing something like 4/5 to 10/11 or equivalent, but fractions are by far the most common type in the UK and you'll normally have to manual change your preference to decimal and all the in play adverts will have their promotions in fractions, so my mind just works that way, but appreciate some of the close ones it can be a bit of a hassle to work out.