Brain scratching math riddle of the day
Solve the following math exercise in under 2 minutes if you are a genius:
Find the number that should be in place of Donald Trump in the following pyramid.

GOOD LUCK!
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Answer: 594
The numbers in the concerned row are the product of the first two boxes in the preceding row minus the number in the first box.
E.g.
SECOND ROW NUMBERS
6*4-6=18
4*2-4=4
2*3-2=4
THIRD ROW NUMBERS
18*4-18=54
4*4-4=12
FINAL ANSWER
54*12-54=594