For a basket of fruits, count 3 by 3, and the count is just finished. 5 and 5 land numbers, the last remaining 3. What is the minimum number of fruits in this basket?
一筐水果，3个3个地数，正好数完．5个5个地数，最后余3个．这筐水果最少有多少个．
<gadget id="calculator">3 * 5</gadget>
<output>15</output>

<gadget id="calculator">15 + 3</gadget>
<output>18</output>

<result>18</result>