Given the task definition and input, reply with output. 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.

Passage: At the start of 1767, the Mysore army unsuccessfully stormed the Kingdom of Travancore from the north. In 1767, the whole of Malabar again revolted Mysore's army of 4,000 men, who were defeated by 2,000 Kottayam Nairs in Northern Malabar. All baggage, arms and ammunition of army was looted by the Nair rebels. Mysorean garrisons were trapped by Nair rebels who seized the countryside and ambushed Mysore convoys and communications with great success. The following year, the English East India Company, under Captain Thomas Henry, sieged the Sultan Bathery Fort to interrupt the supply of arms to Arakkal Kingdom, with a promised help from local kingdoms. But the British were forced to retreat in the retaliation. Mysore army retreated from Malabar temporarily in 1768, successfully crushing the uprisings and building the strategic Palakkad Fort. The authority over Kolathunad was now given to the Arakkal Kingdom. Skirmishes between Arakkal and the Company continued, and in 1770, the Company reclaimed Randattara. In 1773, Mysore forces under Said Saheb and Srinivasarao marched to Malabar through the Thamarassery Pass, since the Hindu rulers had broke the earlier treaties on paying tributes. So, again in the Malabar came under the direct Mysore authority.
How long after the Mysorean garrisons were trapped by Nair rebels did the East India Company seige the Sultan Bathery Fort?