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Calculate the number 1518

NUMBERMANIA: Calculate the number 1518 using numbers [5, 7, 6, 4, 36, 115] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 21

The first user who solved this task is Djordje Timotijevic.

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Sometimes we need to forget

Sometimes we need to forget some people from our past because of one simple reason: They just don't belong to our future.

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Lost confidence in iron railroad bridges

In 1850, the Scientific American magazine carried the news about "Iron Railroad Bridges" that "Since the catastrophe on the New York and Erie Railroad, the company have come to the determination to erect no more iron bridges, and to remove the only two remaining on their road as soon as wooden ones can be erected." In 1849, the company had experimented in building three iron bridges, the first of their kind for a railroad. On 31 Jul 1849, an eastbound stock train was crossing one of these bridges near Mast Hope, when the engineer heard a loud cracking. Opening full throttle, he raced the engine safely across, but the rest of the train fell with the wrecked bridge into the creek. A brakeman and two stockmen lost their lives.«[Image: unrelated rail bridge collapse scene at Little Miami River, Batavia, Ohio, 1884]

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