Passage: The position in which the prince was placed by his marriage, while one of distinction, also offered considerable difficulties; in Albert's own words, "I am very happy and contented; but the difficulty in filling my place with the proper dignity is that I am only the husband, not the master in the house." The Queen's household was run by her former governess, Baroness Lehzen. Albert referred to her as the "House Dragon", and manoeuvred to dislodge the Baroness from her position.Within two months of the marriage, Victoria was pregnant. Albert started to take on public roles; he became President of the Society for the Extinction of Slavery (which was still legal in the southern United States and the colonies of France); and helped Victoria privately with her government paperwork.In June 1840, while on a public carriage ride, Albert and the pregnant Victoria were shot at by Edward Oxford, who was later judged insane. Neither Albert nor Victoria was hurt and Albert was praised in the newspapers for his courage and coolness during the attack. Albert was gaining public support as well as political influence, which showed itself practically when, in August, Parliament passed the Regency Act 1840 to designate him regent in the event of Victoria's death before their child reached the age of majority. Their first child, Victoria, named after her mother, was born in November. Eight other children would follow over the next seventeen years. All nine children survived to adulthood, which was remarkable for the era and which biographer Hermione Hobhouse credited to Albert's "enlightened influence" on the healthy running of the nursery. In early 1841, he successfully removed the nursery from Lehzen's pervasive control, and in September 1842, Lehzen left Britain permanently—much to Albert's relief.After the 1841 general election, Melbourne was replaced as Prime Minister by Sir Robert Peel, who appointed Albert as chairman of the Royal Commission in charge of redecorating the new Palace of Westminster. The Palace had burned...

Question: How long was the palace of Westminster burned down before it was rebuild
seven years