When m=3, n=1.5, what is the value of 6m**2+8n
当m=3，n=1.5时，6m**2+8n的值是多少
<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">6 * 9</gadget>
<output>54</output>

<gadget id="calculator">8 * 1.5</gadget>
<output>12</output>

<gadget id="calculator">54 + 12</gadget>
<output>66</output>

<result>66</result>