The road construction team plans to build a road with a length of 1200 meters. The full length (3/20) was repaired in the first week, and the full length (1/3) was repaired in the second week. How many meters are left unrepaired?
修路队计划修一条长1200米的路．第一周修了全长的(3/20)，第二周修了全长的(1/3)．还剩多少米没有修？
<gadget id="calculator">3 / 20</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (3/20) - (1/3)</gadget>
<output>31/60 = around 0.516667</output>

<gadget id="calculator">1_200 * (31/60)</gadget>
<output>620</output>

<result>620</result>