Calculation: 5*3**4+4*3**4+9*3**2.
计算：5*3**4+4*3**4+9*3**2．
<gadget id="calculator">3 ** 4</gadget>
<output>81</output>

<gadget id="calculator">5 * 81</gadget>
<output>405</output>

<gadget id="calculator">4 * 81</gadget>
<output>324</output>

<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">9 * 9</gadget>
<output>81</output>

<gadget id="calculator">405 + 324 + 81</gadget>
<output>810</output>

<result>810</result>