android-calculatorpp/android-app/src/main/res/layout/widget_layout.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
			  a:layout_width="match_parent"
			  a:layout_height="match_parent"
			  a:orientation="vertical"
			  style="@style/cpp_widget_main_layout_style">

	<include
			layout="@layout/widget_editor"
			a:layout_weight="2"
			a:layout_width="match_parent"
			a:layout_height="0dp"/>

	<LinearLayout
			a:layout_weight="1"
			a:layout_width="match_parent"
			a:layout_height="0dp">

		<include
				layout="@layout/cpp_simple_button_equals"
				a:layout_weight="1"
				a:layout_width="0dp"
				a:layout_height="match_parent"/>

		<include
				layout="@layout/widget_display"
				a:layout_weight="5"
				a:layout_width="0dp"
				a:layout_height="wrap_content"/>

	</LinearLayout>

	<include
			layout="@layout/cpp_simple_keyboard"
			a:layout_weight="5"
			a:layout_width="match_parent"
			a:layout_height="0dp"/>

</LinearLayout>