In a box of candies, there are 5 numbers of 5, 6 numbers of 6, and 2 more than 7 numbers. How many candies are there at least in this box?
一盒糖果，5个5个数，6个6个数都刚好数完，7个7个数还多2个，这盒糖果至少有多少个？
<gadget id="calculator">28 + 2</gadget>
<output>30</output>

<result>30</result>