@startuml
!include <material/calculator>

left to right direction
skinparam defaultTextAlignment center

rectangle "<$ma_calculator>\nEquation" as block #PaleGoldenRod

interface " " as q1
interface " " as q2
interface " " as q3
interface " " as q4
interface " " as q5

q1 --> block: "<User Defined Input 1>"
q2 --> block: "<User Defined Input 2>"
q3 ..> block: ...
q4 --> block: "<User Defined Input n>"
block --> q5: result
@enduml
