Find the probability that 3 randomly selected people all have the same birthday.  Ignore leap years.  Round to eight decimal places

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question: Find the probability that 3 randomly selected people all have the same birthday.  Ignore leap years.  Round to eight decimal places: Below is the breakdown but I need help with the calculations.  I keep getting 0.0082.   The answer is 0.00000751  can you break down how this is the answer.  

No formulas please just the complete explanation- thank you 

probability of 3 people having the same birthday.  
person one
April 1st 2020
person two 1-365
person three 2-365

Need help here:
thus -364 and -363
= 1x-364x-363 =1/132132 =..0000007568189 of three people having the same birthday

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