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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_products_size(products):
 """Return the total file size in GB of all products in the OpenSearch response."""

        size_total = 0
        for title, props in products.items():
            size_product = props["size"]
            size_value = float(size_product.split(" ")[0])
            size_unit = str(size_product.split(" ")[1])
            if size_unit == "MB":
                size_value /= 1024.
            if size_unit == "KB":
                size_value /= 1024. * 1024.
            size_total += size_value
        return round(size_total, 2)