instruction:
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.
question:
Passage: Over the centuries, Weimar remained a small town of less than 5,000 inhabitants. When it became the capital of Saxe-Weimar in 1572, population growth was stimulated and population increased from 3,000 in 1650 to 6,000 in 1750. Around the year 1800, Weimar had 7,000 inhabitants. Their number grew constantly over the years to 13,000 in 1850, 28,000 in 1900 and 35,000 at the beginning of World War I. During the interwar period, the new capital of Thuringia saw a population boom, which led to 65,000 inhabitants in 1940. Since that time, the population levels have stagnated. The years 2009 to 2012 brought a moderate growth of approximately 0.35% p. a., whereas the population in bordering rural regions is shrinking with accelerating tendency. Suburbanization played only a small role in Weimar. It occurred after the reunification for a short time in the 1990s, but most of the suburban areas were situated within the administrative city borders.
answer:
Between 1750 and 1900, how many residents did Weimar gain?


question:
Passage: His first taste of land battle in Russia was the disastrous defeat at Narva, in which Lacy commanded a unit of musketeers, holding the rank of poruchik. During the Great Northern War he was seriously wounded on two occasions, gaining the rank of colonel in 1706. The following year he led a brigade at Poltava, in which battle he greatly distinguished himself. From this point began his fame as a soldier. His next active service, still under Prince Repnin, was the siege of Riga. Lacy was reputedly the first Russian officer to enter the capital of Livland and he was appointed the first Russian chatelain of Riga Castle in the aftermath. In 1719 Apraksin's fleet landed Lacy with 5,000 infantry and 370 cavalry near Umeå in Sweden, where they proceeded to devastate a dozen iron foundries and a number of mills. Soon promoted general, he entered the Military Collegium  — as the Russian Ministry of Defense was then known - in 1723. Three years later, Lacy succeeded Repnin in command of the Russian forces quartered in Livland, and in 1729 he was appointed Governor of Riga. These positions brought him in contact with the Duchess of Courland, who before long ascended the Russian throne as Empress Anna. During her reign, Lacy's capacity for supreme command would never be doubted.
answer:
After Umeå, what rank was Lacy promoted to?


question:
Passage: Bulgarias total military personnel as of 2014 is 37,100, of which 30,400 (80.1%) are active military personnel and 8,100 (11.9%) are civilian personnel. The Land Forces are the largest branch, with at least 18,000 men serving there. In terms of percentage, 53% of all Army personnel are in the Land Forces, 25% are in the Air Force, 13% are in the Navy and 9% are in the Joint Forces Command. Annual spending per soldier amounts to 30,000 leva (~ 15,000 euro) and is scheduled to increase to 43,600 leva by 2014.
answer:

How many leva is the annual spending per soldier supposed to increase by 2014?