I am new to Julia, I tried to write square root program. I still can not figure out whats wrong

ERROR: syntax: extra token “r” after end of expression
Stacktrace:
[1] top-level scope at REPL[68]:1
[2] include_string(::Function, ::Module, ::String, ::String) at .\loading.jl:1088

Don’t capitalize the l in let. You are writing Let, not let.

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