Number A=2*2*3, Number B=2*3*3, what is the greatest common factor of Number A and Number B?
甲数=2*2*3，乙数=2*3*3，甲数和乙数的最大公因数是多少．
<gadget id="calculator">2 * 3</gadget>
<output>6</output>

<result>6</result>