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Calculate the number 695

NUMBERMANIA: Calculate the number 695 using numbers [1, 7, 7, 3, 45, 647] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 10

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

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Sir Oliver Joseph Lodge

Died 22 Aug 1940 at age 89 (born 12 Jun 1851). English physicist who perfected his “coherer”to act as a radio-wave detector, the essential part of an early radiotelegraph receiver. On 14 Aug 1894, he made the first demonstration of wireless transmission of information using Morse code at a meeting of the British Association at Oxford. He transmitted a message about 150 yards from the old Clarendon Laboratory to the University Museum. He provided his laborary facilities to conduct the first clinical use of X-rays in England (7 Feb 1896), at the request of surgeon Sir Robert Jones (1855-1933), to examine the wrist of boy who had accidentally shot himself. Lodge invented electric spark ignition, and investigated psychic phenomena with his friend Sir Arthur Conan Doyle.«

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