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: In 1989, the 1989 Detroit Tigers season collapsed to a 59103 record, worst in the majors. The franchise then attempted to rebuild using a power-hitting approach, with sluggers Cecil Fielder, Rob Deer and Mickey Tettleton joining Trammell and Whitaker in the lineup (fitting for the team with the most 200+ home run seasons in baseball history). In 1990, Fielder led the American League with 51 home runs (becoming the first player to hit 50 since George Foster (baseball) in 1977, and the first AL player since Roger Maris and Mickey Mantle in 1961), and finished second in the voting for AL MVP. He hit 44 home runs and collected 132 RBI in 1991, again finishing second in the AL MVP balloting. Behind the hitting of Fielder and others, the Tigers improved by 20 wins in 1990 (79-83), and posted a winning record in 1991 (8478). However, the team lacked quality pitching, despite Bill Gullicksons 20 wins in 1991, and its core of key players began to age, setting the franchise up for decline. Their minor league system was largely barren of talent as well, producing only a few everyday players during the 1990s. Adding insult to injury, the Tigers and radio station WJR announced in December 1990, that they were not renewing the contract of long-time Hall of Fame play-by play announcer Ernie Harwell, and that the 1991 season would be Harwells last with the team. The announcement was met with resounding protests from fans, both in Michigan and around the baseball world.
How many years did it take Fielder to become first AL player to hit more than 50 since Roger Maris and Mickey Mantle in 1961?