Teacher Wang bought a football and 6 volleyballs for a total of 470 yuan. The price of a football is 80 yuan. How much is a volleyball? (solution by equation)
王老师买了一个足球和6个排球共花了470元，一个足球的价钱是80元，一个排球是多少元？(用方程解)
<gadget id="calculator">470 - 80</gadget>
<output>390</output>

<gadget id="calculator">390 / 6</gadget>
<output>65</output>

<result>65</result>