let say_hi(name) = do
    let z(y) = do
        return y
    let u = z(
    do
        return name
    )
    return "hello "+u+", how are you?"

term.log(say_hi("william"))

let a = 9
let b = 10

term.log(string(a)+'+'+string(b)+'='+string(a+b))