Question: How many Americans are of the decent in which Peter L. Jensen is?

Context paragraphs:
Potu Leavasa: Peter L. Leavasa, better known as Potu Leavasa (born Apia, 27 November 1971) is a Samoan rugby union player.  He plays as a lock.

Danish Americans: Danish Americans (Danish: "Dansk-amerikanere" ) are Americans who have ancestral roots originated fully or partially from Denmark.  There are approximately 1,500,000 Americans of Danish origin or descent.

Invitation to Sociology: Invitation to Sociology: A Humanistic Perspective is a 1963 book about sociology by sociologist Peter L. Berger, in which Berger sets out the intellectual parameters and calling of the scientific discipline of sociology.  Many of the themes presented in this book were later developed in his 1966 book "The Social Construction of Reality", coauthored with Thomas Luckmann.

Peter Padfield: Peter L. N. Padfield (born 1932) is a British author, biographer, historian, and journalist who specializes in naval history and in the Second World War period.  His early journalism appeared under the name P. L. N. Padfield.  As well as his non-fiction work, he has also published four novels.

Peter L. Gluck: Peter L. Gluck is principal of GLUCK+ (formerly Peter Gluck and Partners), an architecture firm based in New York City since 1972.  A monograph of his work, "The Modern Impulse", was published by ORO Editions in 2008.  Gluck has designed buildings ranging from hotels, schools, university buildings and affordable housing to churches, houses, corporate interiors and historic restorations.  Many of his projects regularly win national and international design awards and have been published in architectural journals and books in many countries.  Gluck's son is director Will Gluck.

Sheila Lukins: Sheila Lukins (November 18, 1942 – August 30, 2009), was an American cook and food writer.  She was most famous as the co-author, with Julee Rosso, of the "The Silver Palate" series of cookbooks, and "The New Basics Cookbook", a very popular set of food guides which introduced many Americans to French, Southern and Eastern European cooking techniques and ingredients and popularized a richer and very boldly seasoned style of cooking to Americans in sharp contrast to the health-food movements of the 1970s.  Together, their books sold more than seven million copies.

Lewis Wetzel: Lewis Wetzel (February 24, 1763 -1808) was a frontiersman and Native American fighter who roamed the hills of western Virginia and Ohio.  Wetzel County, West Virginia, is named for him.  Zane Grey, the great Western novelist, wrote about Wetzel in his books "Spirit of the Border", "Betty Zane", and "The Last Trail".  Wetzel is regarded as a hero by many Americans, a lesser-known version of Daniel Boone.  He was accused in 1788 of the murder of peaceful Native Americans, but he escaped and there was no trial.

Peter L. Jensen: Peter Laurits Jensen (16 May 1886 – 26 October 1961) was a Danish American engineer, inventor and entrepreneur.  He founded Magnavox Company and Jensen Radio Manufacturing Company.

Multiracial Americans: Multiracial Americans are Americans who have mixed ancestry of "two or more races".  The term may also include Americans of mixed-race ancestry who self-identify with just one group culturally and socially (cf. the one-drop rule).  In the 2010 US census, approximately 9 million individuals, or 2.9% of the population, self-identified as multiracial.  There is evidence that an accounting by genetic ancestry would produce a higher number.  Historical reasons, including slavery creating a racial caste and the European-American suppression of Native Americans, often led people to identify or be classified by only one ethnicity, generally that of the culture in which they were raised.  Prior to the mid-20th century, many people hid their multiracial heritage because of racial discrimination against minorities.  While many Americans may be biologically multiracial, they often do not know it or do not identify so culturally, any more than they maintain all the differing traditions of a variety of national ancestries.

Jensen Electronics: Jensen is a consumer electronics brand with a history that dates back to 1915 with Peter L. Jensen's invention of the first loudspeaker.  Over the years the Jensen family of brands has grown to include Jensen, Advent, Acoustic Research (AR), Phase Linear and NHT Loudspeakers (Now Hear This) in the United States and Magnat and Macaudio in Germany.  In 2004, Audiovox Corporation added the Jensen portfolio of brands to their mobile and consumer electronics lines.  In 2015, Dual Electronics Corporation (Namsung America) acquired Jensen, however Audiovox maintains its selection of Advent-branded car audio/navigation head units from its line.

Supporting paragraphs: Peter L. Jensen Danish Americans
Answer: 1,500,000