Mathematics
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    210-200= 820-200= 380-300= 160+600= 300+300= 440+600= 940-700= 820-80= 680-400=
    440+500= 240+400= 340+400= 840-500= 740-400= 740-300= 160+300= 440+200= 500+300=
     220+180= 260+420= 450+680=
    600+180= 480-260= 460+480= 200+580= 240 + 340= 370-310= 500+210= 520-500= 680-580= 220+180= 260+420= 450+680=
    500+580= 520-280= 580-480= 1280+580= 560+380= 300+680= 800-480= 700-480= 540-480=
    700-280= 680-160= 440-280= 500+130= 380-260= 660+380= 700+380= 240-240= 470-380=
     220+680= 360+180= 200+680=
    600+180= 180-160= 260+480= 700+880= 240-140= 470-380= 500+980= 520-480= 180-180= 220+680= 360+180= 200+680=
    exp(2)
    arccos(0.214003)
    710-480= 780-280= 430-380= 120+680= 260+380= 400+680= 900-780= 780-160= 640-480=
    170-480= 780-280= 340-380= 120+680= 260+380= 400+680= 900-780= 780-160= 640-480=
    400+580= 200+480= 300+480= 800-580= 700-480= 700-380= 120+380= 400+280= 460+380=
     220+190= 260+430= 450+690=
    600+190= 480-270= 460+490= 200+590= 240 + 350= 370-320= 500+210= 520-510= 680-590= 220+190= 260+430= 450+690=
    500+590= 520-290= 580-490= 1280+590= 560+390= 300+690= 800-490= 700-490= 540-490=
    700-290= 680-170= 440-290= 500+140= 380-270= 660+390= 700+390= 240-250= 370-390=
     220+690= 360+190= 200+690=
    600+180= 180-170= 260+490= 700+890= 240-150= 470-390= 500+990= 520-490= 180-190= 220+690= 360+190= 200+690=
    490-170= 780-290= 340-390= 120+690= 260+390= 400+690= 900-790= 780-170= 640-490=

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