Markdown KaTex dot product, cross product, point of addition, scores

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name	effect	Code
Dot	$a \cdot b$	$a \cdot b$
Cross product	$a \times b$	$a \times b$
In addition to point	$a \div b$	$a \div b$
fraction	$\frac {a} {b}$	$\frac {a} {b}$