am x an =
am+n
am / an
am - an
a0 =
1
(am)n
amxn
(a/b)n =
an / bn
a4 x a2 =
a6
35 x 33 =
38
52 x 53 + 45 x 47 =
55 + 412
(510 + 53) / 59 =
54
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