Mom bought some glass balls, Xiaojun counted 6 and 6, and finally left 1; counted 5 and 5, and finally left 1. How many of these glass balls are there?
妈妈买回来一些玻璃球，小军6个6个地数，最后剩下1个；5个5个地数，最后也剩下1个．这些玻璃球至少有多少个．
<gadget id="calculator">5 * 6</gadget>
<output>30</output>

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

<result>31</result>