Structure Chart example question

Number1 ← 0
Number2 ← 0

Module calculateAverage
          Average ← 0
          Call inputNumbers()
          Average ← Call average(Number1, Number2)
          Call outputAverage(Average)
End Module calculateAverage

Module inputNumbers
          Input Number1 
          Input Number2
End Module inputNumbers

Module average(a,b)
          return (a + b) / 2
End Module average

Module outputAverage(x)
          Output "average = " x
End Module outputAverage

Based on the pseudocode above draw a structure chart showing the parameters passed.