[help] according to the law of numbers in the figure, what number should be filled in the question mark?

[help] according to the law of numbers in the figure, what number should be filled in the question mark?

The result is 14, the middle circle is multiplied by other numbers, the upper left sits down, the upper right sits down;
2*5=10,1*5=5;7*9=63,5*7=35;
3*5=15,4*5=20,2*9=18,2*7=14;