The price of a football is 105 yuan, which is three times the price of a volleyball. How much is a football more expensive than a volleyball?
一个足球的价钱是105元，是一个排球价钱的3倍．一个足球比一个排球贵多少元？
<gadget id="calculator">105 / 3</gadget>
<output>35</output>

<gadget id="calculator">105 - 35</gadget>
<output>70</output>

<result>70</result>