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Calculate the number 4300

NUMBERMANIA: Calculate the number 4300 using numbers [8, 9, 3, 7, 25, 442] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 7

The first user who solved this task is Nasrin 24 T.

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Steel patent

In 1855, a steel-making process was patented by Sir Henry Bessemer, a British inventor and metallurgist (British patent 2,321). His patent was for a method of making steel by blasting compressed air through molten iron to remove impurities and excess carbon. The “Bessemer Process,” made it possible to mass-produce steel inexpensively. In the course of his life, Bessemer earned more than 100 patents, knighthood, and great wealth.

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