83
82
x2 - 83x + 82 = x2 - 82x - x + 82 = x(x-82)-1(x-82) = (x-1)*(x-82)
82 + 82 = 164
81*82/2= 3321
82.1cm, or 821mm
107+(-82)+56 = 81
82 + 83 + 94 = 259
69 + 78 + 82 = 229
-36 + 33 + 100 + (-82) = 15
0.91 + 347 + 82 + 9875 = 10,304.91
63 + 158 + 136 + 82 + 85 + 71 + 108 + 113 + 82 + 101 + (87/11) = 1006.90 recurring (that is, 1006.909090...)
7 plus 75 is 82.