The school buys 28 soccer balls for 980 yuan, and buys 23 volleyballs for 1196 yuan. How much is each volleyball more expensive than footballs?
学校买28个足球，共用去980元，买23个排球，共用去1196元，平均每个排球比足球贵多少元？
<gadget id="calculator">1_196 / 23</gadget>
<output>52</output>

<gadget id="calculator">980 / 28</gadget>
<output>35</output>

<gadget id="calculator">52 - 35</gadget>
<output>17</output>

<result>17</result>