There are currently a batch of saplings, if there are 20 trees in each row, and 5 trees are left in the end; if there are 7 trees in each row, 2 trees are left in the end, what is the minimum number of saplings in this batch?
现有一批树苗，如果每排20棵，最后余下5棵；如果每排7棵，最后剩下2棵，这批树苗最少有多少棵？
<gadget id="calculator">20 * 3</gadget>
<output>60</output>

<gadget id="calculator">60 + 5</gadget>
<output>65</output>

<result>65</result>