If there are 3 numbers of 3 or 5 in a basket of eggs, there are no leftovers. What is the minimum number of eggs in this basket?
一筐鸡蛋3个3个数或5个数都正好数完，没有剩余，这筐鸡蛋至少有多少个．
<gadget id="calculator">3 * 5</gadget>
<output>15</output>

<result>15</result>