A pile of goods is shipped in three days, the first day (7/15) of the total, the second day (1/12), the rest is shipped on the third day, and the third day is the total What percentage?
一堆货物三天运完，第一天运走总数的(7/15)，第二天运走总数的(1/12)，剩下的第三天运完，第三天运走总数的几分之几？
<gadget id="calculator">7 / 15</gadget>
<output>7/15 = around 0.466667</output>

<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">1 - (7/15) - (1/12)</gadget>
<output>9/20 = around 0.45</output>

<result>9/20 = around 0.45</result>