By what number must be $-\dfrac{8}{13}$ multiplied to get 16?

Let the number be $x$

$-\dfrac{8}{13} \times x = 16\\[1em] \Rightarrow x = 16 ÷ -\dfrac{8}{13}\\[1em] \Rightarrow x = -\dfrac{16}{1} \times \dfrac{13}{8}\\[1em] \Rightarrow x = -\dfrac{16 \times 13}{1 \times 8}\\[1em] \Rightarrow x = -\dfrac{208}{8}\\[1em] \Rightarrow x = -26$

$-\dfrac{8}{13}$ must be multiplied by -26 so that the product is 16