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Calculate the number 7747

NUMBERMANIA: Calculate the number 7747 using numbers [4, 9, 6, 6, 31, 757] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 24

The first user who solved this task is Fazil Hashim.

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Gold Watch

Bill: Where did you get that gold watch Joe?
Joe: I won it in a race.
Bill: How many people participated in it?
Joe: Three, a policeman, the owner of the watch, and me!

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First skyscraper

In 1884, construction began in Chicago, Illinois, on the first skyscraper, the ten-story steel-skeleton Home Insurance Company of New York (The use of a steel skeleton made the building of skyscrapers possible, for the frame carries the entire weight of the building, instead of the walls themselves supporting the entire weight.) Designed by Major William Le Baron Jenney, marble was used on the walls of the building, with four columns of polished granite supporting a a marble balcony. Work was finished in the fall of 1885. Later, two more stories were added.

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