We would all like to think of ourselves as rational human beings, but our brains can often let us down. We can reach conclusions based on our prejudices or because we are tired, hungry or emotional, or because we only see what is in front of us but fail to see what is not there but should be.
Try taking a friend or family member out for a walk with you. Walk at a slightly faster pace than normal. Then ask them to perform a not too easy but not too hard mental calculation such as 14 x 13. You will probably find that they stop talking, slow down or even stop momentarily while they try to work it out.
Even for a relatively straightforward mental problem like this our brains can easily get overloaded meaning that we cannot carry on with a straightforward task such as walking. When thinking about any problem which involves ascertaining the truth about a situation, or considering a course of action or pondering what is the right thing to do, allow your brain space to think. Go for a quiet walk where you will be undisturbed and try to think through the problem in an even-handed and unbiased way.
The answer by the way is 182.