TASK DEFINITION: This task involves creating questions from a given passage that involve some kind of complex reasoning (including numerical reasoning). 
The generated questions must require looking at more than one part of the passage to answer. Try to use a variety of reasoning types in your questions (some of the sample reasoning types are illustrated in the 'positive examples' field) and also have a variety of answer types (spans, numbers, dates). A span is a continuous phrase taken directly from the passage or question. In such questions, the answer spans are recommended to be five words. Questions with answer type "number", are expected to start with "How many". For instance, "How long did an event last?" can be phrased as "How many years did an event last?". To increase diversity, try to create more questions for which the answer will be multiple spans. Please create questions that require AT LEAST 2 arithmetic operations as illustrated in the 'positive examples' field. You are encouraged to try DIFFERENT COMBINATIONS of operations and not just limit to the combinations shown in those examples. The more challenging questions you create, the better it is.
PROBLEM: Passage: The 8,878 housing units averaged 685.5 per square mile (264.7/km²), of which 6,287 (73.6%) were owner-occupied, and 2,256 (26.4%) were occupied by renters. The homeowner vacancy rate was 1.2%; the rental vacancy rate was 5.2%.  Around 17,769 people (77.1% of the population) lived in owner-occupied housing units and 5,280 people (22.9%) lived in rental housing units.

SOLUTION: How many more housing units were owner-occupied than occupied by renters?

PROBLEM: Passage: In his first career start, Brett Hundley took a conservative approach and completed 12 of 25 passes for only 87 yards, adding an interception without any passing touchdowns. Rookie Aaron Jones rushed for 131 yards on 17 carries and a touchdown, his second 100-yard game in three career starts. Two first half interceptions from Drew Brees helped the Packers maintain a 14-7 lead at halftime, but the Saints came out of the half scoring 9 points on their first two drives to take a 16-14 lead. After the two teams exchanged field goals, the Saints took the lead for good on an 8-play, 55 yard drive that ended with a 1-yard touchdown rush from Drew Brees. Green Bay's comeback effort was thwarted when Brett Hundley threw an interception to safety Kenny Vaccaro on the ensuing drive. The win marked the Saints' fourth consecutive victory after starting the season 0-2.

SOLUTION: How many incomplete passes did Brett Hundley throw?

PROBLEM: Passage: After the death of Charles XII, Sweden still refused to make peace with Russia on Peter's terms. Despite a continued Swedish naval presence and strong patrols to protect the coast, small Russian raids took place in 1716 at Öregrund, while in July 1717 a Russian squadron landed troops at Gotland who raided for supplies. To place pressure on Sweden, Russia sent a large fleet to the Swedish east coast in July 1719. There, under protection of the Russian battlefleet, the Russian galley fleet was split into three groups. One group headed for the coast of Uppland, the second to the vicinity of Stockholm, and the last to coast of Södermanland. Together they carried a landing force of nearly 30,000 men. Raiding continued for a month and devastated amongst others the towns of Norrtälje, Södertälje, Nyköping and Norrköping, and almost all the buildings in the archipelago of Stockholm were burned. A smaller Russian force advanced on the Swedish capital but was stopped at the battle of Stäket on 13 August. Swedish and British fleets, now allied with Sweden, sailing from the west coast of Sweden but failed to catch the raiders. After treaty of Frederiksborg in early 1720, Sweden was no longer at war with Denmark, which allowed more forces to be placed against the Russians. This did not prevent Russian galleys from raiding the town of Umeå once again. Later in July 1720 a squadron from the Swedish battlefleet engaged the Russian galley fleet in the battle of Grengam. While the result of the battle is contested, it ended Russian galley raids in 1720. As negotiations for peace did not progress, the Russian galleys were once again sent to raid the Swedish coast in 1721, targeting primarily the Swedish coast between Gävle and Piteå.

SOLUTION:
How many years after a Russian squadron landed troops at Gotland did Russia send a large fleet to the Swedish east coast?