Cut a 90-meter-long rope into two pieces so that the first piece is 2 meters shorter than three times the second piece. How many meters is the second piece?
把一根长90米的绳子剪成两段，使第一段比第二段的3倍少2米，第二段有多少米？
<gadget id="calculator">90 + 2</gadget>
<output>92</output>

<gadget id="calculator">3 + 1</gadget>
<output>4</output>

<gadget id="calculator">92 / 4</gadget>
<output>23</output>

<result>23</result>