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Calculate the number 5389

NUMBERMANIA: Calculate the number 5389 using numbers [7, 7, 1, 7, 27, 750] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 9

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

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Insulin

In 1921, insulin was isolated at Toronto University by Canadians Sir Frederick Banting and Charles Best. It proved an effective treatment for diabetes. While Banting had an established a surgical practise in London, Ontario, he conceived a technique which might permit isolation of the anti-diabetic component of the pancreas. He returned to the University of Toronto in 1921 to conduct experiments on the pancreas at the labs of Dr. J.J.R. MacLeod. By the time the summer had ended, he and Charles Best had isolated insulin.Image: The orginal insulin still designed by Dr. Banting and Best.

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