To build a 180-meter-long road, the full length (1/3) was built on the first day, and the full length (2/5) was built on the second day. How many meters are left to be repaired?
修一条180米长的路，第一天修了全长的(1/3)，第二天修了全长的(2/5)，还剩多少米未修？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (1/3) - (2/5)</gadget>
<output>4/15 = around 0.266667</output>

<gadget id="calculator">180 * (4/15)</gadget>
<output>48</output>

<result>48</result>