A basketball is 30 yuan more expensive than a volleyball, and the price of 6 basketballs is equal to the price of 8 volleyballs. If you spend 1440 yuan to buy all basketballs, how many can you buy?
一个篮球比一个排球贵30元，6个篮球的价钱和8个排球的价钱相等．如果用1440元钱全部买篮球，可以买多少个？
<gadget id="calculator">8 * 30</gadget>
<output>240</output>

<gadget id="calculator">8 - 6</gadget>
<output>2</output>

<gadget id="calculator">240 / 2</gadget>
<output>120</output>

<gadget id="calculator">1_440 / 120</gadget>
<output>12</output>

<result>12</result>