batch of apples and pears from the fruit shop weighs 3130 kg in total, and each apple is packed in a basket of 50 kg, and there are 45 baskets in total. Pears are packed in one basket per 40 kg, how many baskets should be packed in pears?
水果店运来一批苹果和梨共重3130千克，苹果每50千克装一筐，共装45筐．梨每40千克装一筐，梨要装多少筐？
<gadget id="calculator">50 * 45</gadget>
<output>2_250</output>

<gadget id="calculator">3_130 - 2_250</gadget>
<output>880</output>

<gadget id="calculator">880 / 40</gadget>
<output>22</output>

<result>22</result>