7*3*3
It is: 2*3*3*3 = 54
13*3
1386 is the product of 2 x 3 x 3 x 7 x 11, all of which are prime numbers.
It is: 2*3*7 = 42
7*3*3
9 = 3 x 3
It is: 3*3*11 = 99
It is: 2*3*3*3 = 54
2/3 = 0.6666666667 multiply this by 3
13*3
It is: 3*3*7*7 = 441
1386 is the product of 2 x 3 x 3 x 7 x 11, all of which are prime numbers.
It is: 2*3*7 = 42
33 = 3 x 11
33 = 3 x 11
ANSWER: 3 * 5 * 5 = 75