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.
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Question: Passage: AH-1 Cobras were in use by the Army during the Tet offensive in 1968 and through to the end of the Vietnam War. Cobras provided fire support for ground forces, escorted transport helicopters and other roles, including aerial rocket artillery (ARA) battalions in the two Airmobile divisions. They also formed "hunter killer" teams by pairing with OH-6 Cayuse scout helicopters. A team featured one OH-6 flying slow and low to find enemy forces. If the OH-6 drew fire, the Cobra could strike at the then revealed enemy. On 12 September 1968, Capt. Ronald Fogleman was flying an F-100 Super Sabre when the aircraft was shot down and he ejected 200 miles north of Bien Hoa.  Fogleman became the only pilot to be rescued by holding on to an Army AH-1Gs deployed gun-panel door. Bell built 1,116 AH-1Gs for the U.S. Army between 1967 and 1973, and the Cobras chalked up over a million operational hours in Vietnam; the number of Cobras in service peaked at 1,081. Out of nearly 1,110 AH-1s delivered from 1967 to 1973 approximately 300 were lost to combat and accidents during the war.  The U.S. Marine Corps used AH-1G Cobras in Vietnam for a short time before acquiring twin-engine Bell AH-1 SuperCobra.

Answer: Approximately how many of the 1110 AH-1s delivered from 1967 to 1973 were lost per year on average?


Question: Passage: The road building programme was also expanded, with capital expenditure increased to 8% of GDP, "the highest level achieved by any post-war government". Central government expenditure on roads went up from £125 million in 1963/64 to £225 million in 1967/68, while a number of road safety regulations were introduced, covering seat belts, lorry driver's hours, car and lorry standards, and an experimental 70 mile per hour speed limit. In Scotland, spending on trunk roads went up from £6.8 million in 1963/64 to £15.5 million in 1966/67, while in Wales, spending on Welsh roads went up from £21.2 million in 1963/64 to £31.4 million in 1966/67.

Answer: By how many millions of pounds did the central government expenditure on roads go up between 1963 and 1968?


Question: Passage: The Mavericks raised their championship banner prior to their Finals rematch with the Heat on Christmas Day, but in what would soon become a mirror image of the 2006–07 Miami Heat seasons eventual failed title defense, Miami blew them out in a 105–94 loss, marking Dallass first regular-season loss to Miami in eight seasons. Things did not get better for Dallas after starting the season 0–3, losing to the Thunder in a playoff rematch on December 29. As the calendar turned to 2012, the Mavericks won 13 of 18 games in January, but they posted a 22–22 record the rest of the way, eventually finishing 7th with a 36–30 record, their lowest finish since the 2007–08 season. Nowitzki produced 21.6 points, 6 rebounds and 45.7% shooting, his lowest numbers since the 2000–01 season. Meanwhile, Odom proved to be a bad fit for the Mavericks, and they decided to sit him out for the final two months of the season.

Answer:
By how many points did Miami win against Dallas on Christmas Day?