The capacity of a 3.5-inch floppy disk is 1.44 megabytes, which has been used (2/3), how many megabytes of space is left.
一张3.5英寸软盘的容量是1.44兆，已经用了(2/3)，还剩多少兆空间．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 - (2/3)</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1.44 * (1/3)</gadget>
<output>0.48</output>

<result>0.48</result>