There is a batch of goods, there are 2 left in 3 and 3 places, 3 left in 5 and 5 places, and 2 left in 7 and 7 places. How many goods are there at least in this batch?
有一批货物，3个3个地数剩2个，5个5个地数剩3个，7个7个地数剩2个，这批货物至少有多少个？
<gadget id="calculator">3 * 7</gadget>
<output>21</output>

<gadget id="calculator">21 + 2</gadget>
<output>23</output>

<result>23</result>