Mom buys less than 10 eggs, count two by two, and finally one more, three by three, and finally one more, how many eggs did mother buy.
妈妈买回不到10个鸡蛋，两个两个地数，最后多1个，3个3个地数，最后也多1个，妈妈买了多少个鸡蛋．
<gadget id="calculator">2 * 3</gadget>
<output>6</output>

<gadget id="calculator">6 + 1</gadget>
<output>7</output>

<result>7</result>