3、Given $2014=\left(a^{2}+b^{2}\right) \times\left(c^{3}-d^{3}\right)$, where $\mathbf{a} 、 \mathbf{b} 、 \mathbf{c} 、 \mathbf{d}$ are four positive integers, please write a multiplication equation that satisfies the condition: $\qquad$