2 x 43 x 19 = 1634
2 * 43 * 19 = 1634
(2)(43)(19) = 1634
(2)(43 * 19) = 1634
(2 * 43)(19) = 1634
(2 * 19)(43) = 1634
And so forth and so forth. You can keep showing different ways of multiplying this problem by using the association and communicative properties of multiplication.
Cheers