"Missing argument labels 'arg1:arg2:' in call" : <pre><code>var sum1 = 0 


func calculatorMath(arg1: Int, arg2: Int) -&gt; Int {
        sum1 = arg1 + arg2
        return sum1
    }

calculatorMath(20,50)
</code></pre>

<p>//the problem is "Missing argument labels 'arg1:arg2:' in call". What do I need to do?</p>
