The green lever activates the Swirly-Hurly Effect. The Earth will be twisted. All the land masses will be torn to shreds. Mountains will be come valleys and rivers will reverse their courses.

   "So you wanna disarm this lever of doom? Well, all you gotta do is input the correct value for the bat and floating eye formula. Yea, that's it."


 a = 15; b = - 12

 
 = a + b

 
 = a - b

 Ininput the value of this expression
 



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