There are 20 peach trees and 20 plum trees in the orchard. Last year, 980 kg of peaches and 1260 kg of plums were harvested. On average, how many kilograms less peaches per peach tree than plums per plum tree?
果园里有桃树和李树各20棵，去年共收桃子980千克，李子1260千克．平均每棵桃树收的桃子比每棵李树收的李子少多少千克？
<gadget id="calculator">1_260 / 20</gadget>
<output>63</output>

<gadget id="calculator">980 / 20</gadget>
<output>49</output>

<gadget id="calculator">63 - 49</gadget>
<output>14</output>

<result>14</result>