Make two $$3-$$digit numbers from the following group of numbers $$1$$, $$2$$, $$ 3$$, $$ 7$$, $$ 8$$ and $$9$$, and each number can be used only once. Find the lowest possible value of the product of these two numbers. 
Overseas Competition->Knowledge Point->Combinatorics->Combinatorics Involving Extreme Values->Forming a Maximum/Minimum Multi-Digit Numbers with Fixed Sums