Buying 3 footballs and 4 basketballs costs 330 yuan, and buying 4 footballs and 2 basketballs costs 240 yuan. How much is each basketball?
买3个足球和4个篮球共用330元，买4个足球和2个篮球用240元．每个篮球多少钱？
<gadget id="calculator">240 * 2</gadget>
<output>480</output>

<gadget id="calculator">480 - 330</gadget>
<output>150</output>

<gadget id="calculator">4 * 2</gadget>
<output>8</output>

<gadget id="calculator">8 - 3</gadget>
<output>5</output>

<gadget id="calculator">150 / 5</gadget>
<output>30</output>

<gadget id="calculator">30 * 4</gadget>
<output>120</output>

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

<gadget id="calculator">120 / 2</gadget>
<output>60</output>

<result>60</result>