A piece of wood is sawn off 12.5 meters, leaving 3.8 meters. How many meters was this wood originally?
一根木头，锯去12.5米，还剩下3.8米．这根木头原来长多少米？
<gadget id="calculator">12.5 + 3.8</gadget>
<output>16.3</output>

<result>16.3</result>