a**2 means the multiplication of 2 a, a**3 means the multiplication of 3 a, ... an means the multiplication of n a (n is a natural number except 0), then 2**4/3=how much.
a**2表示2个a相乘，a**3表示3个a相乘，…an表示n个a相乘(n是除0外的自然数)，那么2**4/3=多少．
<gadget id="calculator">2 ** 4</gadget>
<output>16</output>

<gadget id="calculator">16 / 3</gadget>
<output>16/3 = around 5.333333</output>

<result>16/3 = around 5.333333</result>