There is a box of apples with 2 land numbers that differ by 1, and 3 apples with land numbers of 3 and 5 land numbers with 5 land numbers that differ by exactly one. How many apples are there at least in this box?
有一箱苹果2个2个地数差一个，3个3个地数和5个5个地数也都正好差一个，这箱苹果至少有多少个？
<gadget id="calculator">2 * 3 * 5</gadget>
<output>30</output>

<gadget id="calculator">30 - 1</gadget>
<output>29</output>

<result>29</result>