It is known that A=2*3*m, B=3*5*m, (m is a natural number), and the greatest common factor of A and B is 9, then what is their least common multiple.
已知甲=2*3*m，乙=3*5*m，(m为自然数)，已知甲和乙的最大公因数为9，那么它们的最小公倍数为多少．
<gadget id="calculator">9 / 3</gadget>
<output>3</output>

<gadget id="calculator">2 * 3 * 3 * 5</gadget>
<output>90</output>

<result>90</result>