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Calculate the number 1933

NUMBERMANIA: Calculate the number 1933 using numbers [9, 4, 7, 5, 69, 509] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 13

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

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I want to be the reason

I want to be the reason you look down at your phone and smile. Then walk into a pole.

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Harvey Fletcher

Died 23 Jul 1981 at age 96 (born 11 Sep 1884).American acoustical engineer who was the first to demonstrate stereophonic sound (1934). He was a trail blazing investigator of the nature of speech and hearing, noted for his contributions in acoustics, electrical engineering, speech, medicine, music, atomic physics, sound pictures, and education. He guided the development of the Western Electric Hearing Aid, the first such device to use vacuum tubes. He developed a group survey method using recorded sound of decreasing volume which has wide acceptance in schools throughout the nation.

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