Simplify the following expressions where possible.
If a given expression is already fully simplified, then enter it as your answer.
$a^s\times a^t$as×at
$\frac{a^s}{a^t}$asat
$a^s\times a^s$as×as
$a^s+a^s$as+as
$a^s+a^t$as+at
Simplify $p^7\div p^3\times p^5$p7÷p3×p5.
Simplify $p^{14}\div p^6\div p^5$p14÷p6÷p5.
Simplify the following, giving your answer with a positive index: $\frac{4n^3\times4n^4}{16}$4n3×4n416