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Calculate the number 799

NUMBERMANIA: Calculate the number 799 using numbers [4, 3, 1, 3, 84, 110] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 15

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

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You have to stay in shape...

You have to stay in shape. My mother started walking five miles a day when she was 60.
She's 97 now and... we have no idea where she is.

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African-American patents an ironing board

In 1892, a U.S. patent for a specialized “Ironing Board” was issued to the black American inventor, Sarah Boone, likely a former slave (No. 473,653). Her design featured a quite narrow padded board, curved to make it easier to iron sleeves. Numerous patents were issued before hers with similar titles. The first patent designated specifically as an “Ironing Table” was issued several decades earlier, in 1858, to W. Vandenburg and J. Harvey (No. 19,390). Unpatented styles evolved from long long before that, so no single inventor can be identified for the earliest ironing board. For example, J.H. Mallory's “Ironing Table,” patented 24 Oct 1871 (No. 120,296) more closely resembles today's adjustable-height, collapsible model.«

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