\(\left[\frac{\operatorname{cosec} 31^{\circ}-\sec 59^{\circ}}{\left(\sin 18^{\circ} \div \cos 72^{\circ}\right)} \times \frac{\tan 26^{\circ}}{\cot 64^{\circ}}\right]+\left[\frac{\tan 30^{\circ}+\tan 15^{\circ}}{\left(1-\tan 30^{\circ} \tan 15^{\circ}\right)}\right]\) = ______.