To build a 120-meter-long road, it was repaired on the first day (1/6), and on the second day (1/5), how many meters were repaired less on the first day than on the second day?
修一段长120米的路，第一天修了它(1/6)，第二天修了它的(1/5)，第一天比第二天少修了多少米？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">(1/5) - (1/6)</gadget>
<output>1/30 = around 0.033333</output>

<gadget id="calculator">120 * (1/30)</gadget>
<output>4</output>

<result>4</result>