The school buys 5 footballs and 5 volleyballs each. It costs 115 yuan to buy footballs and 360 yuan to buy volleyballs. How much is a football more expensive than a volleyball?
学校买来足球和排球各5个，买足球用去115元，买排球用去360元．一个足球比一个排球贵多少元？
<gadget id="calculator">360 / 5</gadget>
<output>72</output>

<gadget id="calculator">115 / 5</gadget>
<output>23</output>

<gadget id="calculator">72 - 23</gadget>
<output>49</output>

<result>49</result>