Grandma bought a pack of toffee for Xiaohua in kindergarten. Xiaohua was very happy. She found that every group of 3 was missing 2, every group of 4 was missing 3, and every group of 5 was missing 4. How many toffees are there at least in this pack?
奶奶给上幼儿园的小花买了一包奶糖，小花高兴极了，她每3颗一组发现少2颗，每4颗摆一组，少3颗，每5颗摆一组少4颗，这包奶糖最少有多少颗？
<gadget id="calculator">3 * 4 * 5</gadget>
<output>60</output>

<gadget id="calculator">60 + 1</gadget>
<output>61</output>

<result>61</result>