Calculation: 64**2*12.5**2.
计算：64**2*12.5**2．
<gadget id="calculator">64 ** 2</gadget>
<output>4_096</output>

<gadget id="calculator">12.5 ** 2</gadget>
<output>156.25</output>

<gadget id="calculator">4_096 * 156.25</gadget>
<output>640_000</output>

<result>640_000</result>