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: The Rangers started off the 201516 season well. After 18 games, they had a 1422 record and a nine-game winning streak, which was eventually halted by Tampa Bay. However, the organization soon went downhill in the winter, losing three-straight games against the Montreal Canadiens, Boston Bruins and Philadelphia Flyers. They eventually posted a 472 record in December for only ten points. In January the Rangers started playing more efficiently, posting a fair 641 record, and improved in February by going on a 1031 run without any back-to-back losses. On January 8, 2016 the Rangers traded Emerson Etem to the Vancouver Canucks for Nicklas Jensen and a sixth-round pick in the 2017 NHL draft. On February 28, the Rangers traded prospect Aleksi Saarela, a 2016 second-round draft pick, and a 2017 second-round draft pick for Carolina Hurricanes captain Eric Staal, who later left the team after the season. The Rangers finished the season with 101 points for back-to-back 100+ point seasons. Despite high hopes, the Rangers were eliminated by the Pittsburgh Penguins in the first round of the 2016 Stanley Cup playoffs in five games. On May 2, the Rangers agreed to terms with Antti Raanta on a contract extension, and on May 13, signed Pavel Buchnevich to an entry-level contract.
How many days after the Rangers agreed to terms with Antti Raanta on a contract extension did they sign Pavel Buchnevich to an entry-level contract?