For two pieces of cloth of the same length, the first piece uses 34 meters, and the second piece uses 20 meters. As a result, the number of meters remaining in the second piece is three times that of the first piece. How many meters were the two pieces of cloth originally?
两块同样长的布，第一块用去34米，第二块用去20米，结果第二块所余的米数是第一块的3倍．这两块布原来长多少米．
<gadget id="calculator">34 - 20</gadget>
<output>14</output>

<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">14 / 2</gadget>
<output>7</output>

<gadget id="calculator">7 * 3</gadget>
<output>21</output>

<gadget id="calculator">21 + 20</gadget>
<output>41</output>

<result>41</result>