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Calculate the number 3125

NUMBERMANIA: Calculate the number 3125 using numbers [6, 9, 4, 2, 57, 201] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 20

The first user who solved this task is Thinh Ddh.

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Mike Birbiglia: Crying Over a Book

I was on the subway the other day, and the guy next to me was crying over a book. He was actually crying. So, I leaned over -- I go, 'You don't know how to read, either?'

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First U.S. commercial gasoline engine

In 1872, George B. Brayton of Boston, Mass. (3 Oct 1830 - 17 Dec 1892) received a U.S. patent for a gas-powered engine (No. 125,166). He did pioneering work inventing this first American commercial internal combustion engine, which he manufactured and sold. Its principle of continuous ignition later became the basis for the turbine engine. A pressurized air-fuel mixture from a reservoir was ignited upon entering a water-cooled cylinder. The Brayton engine was tried in watercraft, one of John Holland's submarines and one for a few months installed in a carriage (1872-3). He held British patent Jul 1890, No. 11,062.«

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