The sum of three consecutive natural numbers is 15, what is the least common multiple of these three numbers?
三个连续自然数的和是15，这三个数的最小公倍数是多少．
<gadget id="calculator">15 - 1</gadget>
<output>14</output>

<gadget id="calculator">1 + 14</gadget>
<output>15</output>

<gadget id="calculator">1 + 1 + 1</gadget>
<output>3</output>

<gadget id="calculator">15 / 3</gadget>
<output>5</output>

<gadget id="calculator">2 * 6 * 5</gadget>
<output>60</output>

<result>60</result>