A road has been repaired (5/8), but there are 30 meters left to be repaired. How many meters is this road?
一条路修了(5/8)，还剩30米没有修，这条路有多少米．
<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">1 - (5/8)</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">30 / (3/8)</gadget>
<output>80</output>

<result>80</result>