- A piece of iron wire has been cut 3 times, and the average length of each section is 4 meters. How many meters is the original length of this iron wire?
-根铁丝剪了3次，平均每段长4米，原来这根铁丝长多少米．
<gadget id="calculator">3 + 1</gadget>
<output>4</output>

<gadget id="calculator">4 * 4</gadget>
<output>16</output>

<result>16</result>