Mathematics
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    995e
    2771e
    2690e
    5661e
    44+24= 55+23= 72+23= 73+23= 75+24= 7+26= 71+24= 73+24=
    64+25= 62+25= 63+24= 63+23= 64+24= 54+24= 56+25= 63+25=
    34+14= 45+13= 32+13= 23+13= 35+14= 21+16= 21+14= 23+14=
    34+15= 32+15= 23+14= 33+13= 44+14= 54+14= 16+15= 43+15=
    34+10= 45+3= 32+3= 23+14= 35+1= 21+41= 21+10= 23+4=
    34+40= 32+40= 23+13= 33+11= 44+30= 54+30= 16+5= 43+31=
    45+4= 36+23= 32+43= 23+52= 46+23= 22+45= 32+24= 34+53=
    45+34= 42+55= 43+52= 43+6= 54+25= 64+25= 6+73= 53+26=
    (arctan(50)-arctan(1/50))
    arctan(20)-arctan(1/20)
    (arctan(20)-arctan(1/20))/3.14*180
    1.428181/3.14*180
    arctan14-arctan(1/14)
    arctan(1/14)
    arctan14
    3456e

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