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Calculate the number 8173

NUMBERMANIA: Calculate the number 8173 using numbers [8, 5, 7, 4, 30, 620] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 11

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

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Garbage day

A Father is asked by his friend, "Has your son decided what he wants to be when he grows up?"

"Yes, he wants to be a garbage collector," he replies.

To this his friend responds "Strange ambition to have for a career."

"Well, he thinks that garbage collectors only work on Tuesdays!"

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William MacGillivray

Died 5 Sep 1852 at age 56 (born 25 Jan 1796).Scottish botanist and zoologist. From 1831-41, he was Conservator at the Royal College of Surgeons Museum in Edinburgh, and thereafter Professor of Natural History at Aberdeen until his death. He is best known to botanists for his one-volume abridgment of Withering's Botanical Arrangement. He assisted Audubon in the technical part of his Birds of America. MacGillivray authored five volumes of a History of British Birds. He also wrote other manuals in botany, geology and conchology. Through extensive dissections, he made a thorough study of the internal structure of birds. His eldest son, John Macgillivray, accompanied Captain Stanley as naturalist in the voyage of the Rattlesnake.«[Image: engraving, considered to be a poor likeness, from self-portrait in oils, retouched after his death by a local artist. Published in Vertebrate Fauna of the Outer Hebrides, plate ii, by Harvie-Brown and Buckley.]

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