Please fill in the number 1-9 of the vacancy and find the maximum number

Please fill in the number 1-9 of the vacancy and find the maximum number

941*852*763=611721516

Two triangles arranged in accordance with the law fill in the missing number 1 24 3 6 9 4 8 12 16 5 10 15 () 25 6 12 18 24 30 36 according to the law
7（） 21 28 35 42 49

1,2,4,3,6,9…… 20 in brackets
The title can be understood as 1 times of 1, 1 times of 2, 2 times of 2, 1 times of 3, 2 times of 3, 3 times of 3, 1 times of 4 Therefore, it should be 4 times of 5 in brackets, that is 20
Similarly, the answer to the second question is 14

Fill in the blanks according to the rule of numbers
11 9 7 9 13 8 ( ） 5
5 4 2 8 3 4 7 2

Except for the ten digits 11 and 13, the other single digits appear twice, so fill in 3