question: As of the census of 2010, there were 47,723 people, 17,816 households, and 11,722 families residing in the city. The population density was 1,754.6/sq mi (677.5/km). There were 19,806 housing units at an average density of 749.9 per square mile (289.6/km). The racial makeup of the city was 38.32% White (U.S. Census), 57.25% African American (U.S. Census), 1.25% Native American (U.S. Census), 1.85% Asian, 0.14% Pacific Islander (U.S. Census), 1.03% from Race (United States Census), and 1.09% from two or more races. 6.98% of the population were Hispanics in the United States or Latino (U.S. Census) of any race.
Answer this question: How many more housing units are there than households?
answer: 1990

question: Trying to snap a two-game skid, the Bears flew to the Hubert H. Humphrey Metrodome for a Week 15 Monday night NFC North rematch with the Minnesota Vikings. In the first quarter, Chicago struck first as kicker Robbie Gould got a 29-yard field goal for the only score of the period. In the second quarter, the Vikings tied the game with kicker Ryan Longwell getting a 42-yard field goal. Afterwards, the Bears would take the halftime lead as Gould kicked a 47-yard field goal and FB Jason McKie managed to get a 1-yard TD run. In the third quarter, Minnesota started to creep closer as RB Adrian Peterson got a 1-yard TD run (with a failed PAT) for the only score of the period. In the fourth quarter, the Vikings took the lead with Peterson getting an 8-yard TD run. Chicago tried to rally, but Minnesota's defense was too much. With their third-straight loss, not only did the Bears fall to 5-9, but they were knocked out of playoff contention. On a positive note, LB Brian Urlacher had a good day with 4 tackles, 2 sacks, and an interception. It was also the first time since 2004 that Urlacher had a sack and an interception in the same game.
Answer this question: How many yards long, to two decimal places, were field goals kicked in the first half?
answer: 39.33

question: In 1613 Hanyakrakusuma rose to the throne of Mataram. He began the eastward conquest by an incursion towards Surabaya's southern flank, the Eastern Salient, Malang, and possibly Pasuruan in 1614. Surabayan forces attacked this Mataram army during its homeward march, but was defeated. In 1615 Agung conquered Wirasaba, personally leading the troops there. Surabaya did not commit its troops to help Wirasaba, due to the fear that its other ally, Tuban, would take advantage, betray Surabaya, and attack it from the rear. The conquest of the strategically important Wirasaba posed such a clear threat to Surabaya and other eastern states that the alliance rallied. They mobilized their troops and marched towards Pajang, a city under Mataram's control but ostensibly on the verge of rebellion. However, a Mataram spy in Tuban deceived the allied forces into taking a bad route towards Pajang. As a result, the allied army found itself isolated in Siwalan, near Pajang. This army was surrounded by Sultan Agung and defeated in January 1616. Agung then won victories in Lasem and Pasuruan . In 1617 Pajang finally rebelled against Mataram but was defeated, and the lord of Pajang fled to Surabaya. In 1619 Agung conquered Tuban, one of the strongest members of Surabaya's alliance. This conquest put Agung in control of Tuban's shipbuilding activities, and therefore allowed him to build a navy to challenge Surabaya's previous naval supremacy.
Answer this question: How many years after Agung conquered Wirasaba did he conquer Tuban?
answer:
4