What are 2 possible explanations that might explain for the extra entry

Given right triangle xyz, which correctly describes the locations of the sides in relation to

During a bike challenge riders have to collect various colored ribbons each 1/2 mile they collect a red ribbon each eighth mile they collect a green ribbon and each quarter mile they collect a blue ribbion wich colors of ribion will be collected at the 3/4 markrer

8000 + 8800 + 8000 + 8 million + 80 trillion + another a katrillion equals