A construction team lays a railway. It is planned to finish paving in 15 days, and pave 1.24 meters per day. It has been paved for 9.2 days, how many meters are left unpaved?
一个工程队铺设一条铁路．计划15天铺完，每天铺1.24米．已经铺了9.2天，还剩多少米没铺？
<gadget id="calculator">1.24 * 15</gadget>
<output>18.6</output>

<gadget id="calculator">1.24 * 9.2</gadget>
<output>11.408</output>

<gadget id="calculator">18.6 - 11.408</gadget>
<output>7.192</output>

<result>7.192</result>