Given that A=2*2*3*5 and B=2*3*5*7, what is the least common multiple of A and B?
已知A=2*2*3*5，B=2*3*5*7，那么A与B的最小公倍数是多少．
<gadget id="calculator">2 * 3 * 5 * 2 * 7</gadget>
<output>420</output>

<result>420</result>