Riddle Me This: Which Operators Fit This Equation? : 5 _ 9 _ 6 _ 6 = 20

This conundrum necessitates fast cognitive agility and analytical abilities. You'll be provided with an equation that has three operator spots empty. Your task is to determine the missing operators and fill in the equation. It's an excellent method to assess your comprehension of rudimentary math operations and hone your rational skills. Prepare to stimulate your brain and have a blast!