A road construction team repairs a 230-meter-long highway. On the first day, it repairs the full length (1/5), on the second day it repairs the full length (1/4), on the third day it repairs 30% of the total length, and the remaining How much is not repaired?
一个修路队修一条长230米的公路，第一天修了全长的(1/5)，第二天修了全长的(1/4)，第三天修了全长的30%，还剩多少没有修？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">(1/5) + (1/4) + (3/10)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 - (3/4)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">230 * (1/4)</gadget>
<output>115/2 = around 57.5</output>

<result>115/2 = around 57.5</result>