The school divided some of the 500 potted flowers cultivated among the five grades, and left 155 pots after the distribution. How many pots will each grade get on average?
学校把培育的500盆花，分一些给五个年级养，分完后还留下155盆，平均每个年级分得多少盆？
<gadget id="calculator">500 - 155</gadget>
<output>345</output>

<gadget id="calculator">345 / 5</gadget>
<output>69</output>

<result>69</result>