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Calculate the number 813

NUMBERMANIA: Calculate the number 813 using numbers [3, 5, 2, 6, 74, 605] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 13

The first user who solved this task is Nílton Corrêa De Sousa.

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There are TWO distinctly...

There are TWO distinctly different holes up there. Not one all-purpose hole.

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Simon Marius

Died 26 Dec 1624 at age 51 (born 20 Jan 1573).(Also known as Simon Mayr) German astronomer, pupil of Tycho Brahe, one of the earliest users of the telescope and the first in print to make mention the Andromeda nebula (1612). He studied and named the four largest moons of Jupiter as then known: Io, Europa, Ganymede and Callisto (1609) after mythological figures closely involved in love with Jupiter. Although he may have made his discovery independently of Galileo, when Marius claimed to have discovered these satellites of Jupiter (1609), in a dispute over priority, it was Galileo who was credited by other astronomers. However, Marius was the first to prepare tables of the mean periodic motions of these moons. He also observed sunspots in 1611.«[DSB gives date of birth 20 Jan 1573. EB gives 10 Jan 1573.]

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