<Button
        android:id="@+id/sum"
        android:layout_width="100dp"
        android:layout_height="49dp"
        android:layout_marginTop="66dp"
        android:onClick="onButtonClick"
        android:text="Try"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/Number" />

    <EditText
        android:id="@+id/Number"
        android:layout_width="212dp"
        android:layout_height="55dp"
        android:ems="10"
        android:hint="Enter a numer"
        android:inputType="number"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.497"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.159" />

    <EditText
        android:id="@+id/Result"
        android:layout_width="181dp"
        android:layout_height="54dp"
        android:layout_marginTop="336dp"
        android:ems="10"
        android:hint="Result"
        android:inputType="number"
        android:textSize="14sp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />