If: A=2*2*5, B=2*3*5, then the least common multiple of A and B is how many times their greatest common divisor.
如果：A=2*2*5，B=2*3*5，那么A、B的最小公倍数是它们的最大公约数的多少倍．
<gadget id="calculator">2 * 2 * 3 * 5</gadget>
<output>60</output>

<gadget id="calculator">2 * 5</gadget>
<output>10</output>

<gadget id="calculator">60 / 10</gadget>
<output>6</output>

<result>6</result>