Divide a box of biscuits equally among 3, 2 or 5 people, and there will be an excess of 1. How many biscuits are there at least in this box?
把一盒饼干平均分给3人、2人或5人，均多余1块，这盒饼干至少有多少块？
<gadget id="calculator">3 * 2 * 5</gadget>
<output>30</output>

<gadget id="calculator">30 + 1</gadget>
<output>31</output>

<result>31</result>