For two pieces of cloth of the same length, the first piece uses 32 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 long are the two pieces of cloth originally?
两块同样长的布，第一块用去32米，第二块用去20米，结果所余的米数第二块是第一块的3倍．两块布原来各长多少米？
<gadget id="calculator">32 - 20</gadget>
<output>12</output>

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

<gadget id="calculator">12 / 2</gadget>
<output>6</output>

<gadget id="calculator">6 + 32</gadget>
<output>38</output>

<result>38</result>