How to solve these TextField and Label problem?

            TextField("Calculated number", value: $calculated, format: Float)
            TextField("Calculate number", text: $calculator, format: Float)
            TextField("Calculate way", text: $calculateway, format: Float)

How to solve the errors: 'Cannot find $calculated, $calculator and $calculated in scope'? Also this Label(Maybe I don't know how to make):

Label("Result:"+$calresult, systemImage: "42.circle")

How to solve this error: 'Cannot find $calresult in scope'?

Sorry I changed to HStack textField statement     HStack {Text("Calculated number"); TextField("", value: $calculated, format: .number) }     HStack {Text("Calculate number"); TextField("", value: $calculator, format: .number) }     HStack {Text("Calculate way"); TextField("", value: $calculateway, format: .number)}

How to solve these TextField and Label problem?
 
 
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