User:春上冰月/沙盒

$0$ $1$ $4$ $x^2$ $\sin$ $\ln$ °′″ $\frac{◼}{◻}$ $\sqrt{◼}$ S⇔D ${\log }_{◼}◻$ $\times 10^x$ $+$  ―  $\times$ $÷$ $.$ =