Excel help

Hello,
i am new to using excel so if anybody is able to help please could you tell me in laymens terms so i know exactly what to put in each cell. What i am trying to achieve is this. say i put the number 1 in cell a2 is it possible for cell c1 to automatically put a value in say £50 and then in cell d1 automatically put the description of the job in, hope this makes sense and i know it is probably very simple for you experts out there but i have not got a clue. so i want 1 to =£50 and also the job description. 2 to = say £100 and a different job description. any help would be much appreciated.