Why are there so many calories in supernoodles?

Just eating a pack of 25p supernoodles from Asda (own brand) and I noticed there are a whopping 474 calories in a pack? wtf

It says per half pack served is 237 calories. The packs are tiny, I have to use 2 packs just to fill the bowl therefore consuming almost 1000 calories on a snack. I just don't get it.