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: The Royal Navy of Oman had 4,200 men in 2000, and is headquartered at Seeb. It has bases at Ahwi, Ghanam Island, Mussandam and Salalah. In 2006, Oman had 10 surface combat vessels. These included two 1,450-ton Qahir-class corvette corvettes, and 8 ocean-going patrol boats. The Omani Navy had one 2,500-ton Nasr al Bahr (L2) LSL (240 troops, 7 tanks) with a helicopter deck. Oman also had at least four landing craft. Oman ordered three Khareef-class corvette corvettes from the VT Group for 400 million in 2007. They are being built at Portsmouth. In 2010 Oman spent US$4.074 billion on military expenditures, 8.5% List of countries by military expenditure share of GDP. The sultanate has a long history of association with the British military and defence industry. According to SIPRI, Oman was the 23rd largest arms importer from 2012-2016.
Output:
How many corvette corvettes will Oman have after their 2007 order is complete?