The school learned to buy 5 footballs and 3 volleyballs for a total of 520 yuan. It is known that the price of 1 volleyball is exactly that of a football (1/2). How much is a football?
学校学买了5个足球和3个排球，一共用去520元，已知1个排球的价钱正好是个足球的(1/2)．一个足球多少元？
<gadget id="calculator">2 / 1</gadget>
<output>2</output>

<gadget id="calculator">5 * 2</gadget>
<output>10</output>

<gadget id="calculator">10 + 3</gadget>
<output>13</output>

<gadget id="calculator">520 / 13</gadget>
<output>40</output>

<gadget id="calculator">40 * 2</gadget>
<output>80</output>

<result>80</result>