Grandma's family raised a flock of chickens, counted 2 by 2, just finished counting, counted 3 by 3, also just finished counting, and counted 5 by 5, also just finished counting. I heard from grandma that there are less than 50 chickens in this flock. Do you know how many chickens grandma has?
奶奶家养了一群鸡，2个2个地数，刚好数完，3个3个地数，也刚好数完，5个5个地数，同样也正好数完．听奶奶说这群鸡不到50只，你知道奶奶家养了多少只鸡吗？
<gadget id="calculator">2 * 3 * 5</gadget>
<output>30</output>

<result>30</result>