For some shells, the number of 3 and 3 is 1 more; the number of 4 and 4 is 2 more; the number of 5 and 5 is 3 more. At least how many of these shells are there?
一些贝壳，3个3个地数多1个；4个4个地数多2个；5个5个数多3个．这些贝壳至少有多少个？
<gadget id="calculator">3 * 4 * 5</gadget>
<output>60</output>

<gadget id="calculator">60 - 2</gadget>
<output>58</output>

<result>58</result>