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.
Input: Passage: China is the worlds leading producer of electric bicycles. According to the data of the China Bicycle Association, a government-chartered industry group, in 2004 Chinas manufacturers sold 7.5 million electric bicycles nationwide, which was almost twice 2003 sales; domestic sales reached 10 million in 2005, and 16 to 18 million in 2006. By 2007, electric bicycles were thought to make up 10 to 20 percent of all two-wheeled vehicles on the streets of many major cities. A typical unit requires 8 hours to charge the battery, which provides the range of 2530 miles (4050 km), at the speed of around , however people usually illegal override, makes it just like normal motorcycles, capable of reach nearly . A large number of such vehicles is exported from China as well (3 million units, worth 40 billion yuan ($5.8 billion), in 2006 alone),.
Output:
How many electric bicycles were exported from China in 2006?