pls provide step to calculate using sipmath

You have a new system and want to calculate some reliability parameters for it. The system is comprised of the following diagram. Elements A and B are in series with each other, and together they are in parallel with Element C. A is uniformly distributed between 300 and 700 hours. B is normally distributed with a mean of 500 and a stdev of 50 hours. C is exponentially distributed with lambda of 0.002 failures per hour. Construct a SIPmath spreadsheet to answer the question: how many of 1000 trials would you expect to survive beyond 700 hours? Make your spreadsheet easy to read and document your answers