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Calculate the number 1641

NUMBERMANIA: Calculate the number 1641 using numbers [7, 1, 1, 2, 13, 202] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 17

The first user who solved this task is Djordje Timotijevic.

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Ynes Mexia

Died 12 Jul 1938 at age 68 (born 24 May 1870).Ynes Enriquetta Julietta Mexia was an American botanical collector was an American botanical collector, who developed her passion for botany and fieldwork in her 50's, and yet was able to make about 150,000 collections in 12 years on seven expeditions. She was aged 55 when she made her first collecting trip. She accompanied Stanford's Assistant Herbarium Curator, Roxanna Ferris, in Mexico. Her activity was remarkable, as she spent several years exploring for specimens in remote reaches of Central and South Americas. At age 59, she began a 2½ year expedition in Peru and Brazil which included a three-month period trapped by floods with her team in a 600-m deep gorge which they escaped eventually by building a raft and running the river and its rapids.«

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