Four ropes with a length of 8 centimeters are tied together to form a long rope. Each knot uses 1 centimeter, regardless of the length of the knot. How long is the long rope now?
四根长都是8厘米的绳子，把它们打结连在一起，成为一根长绳，打结处每根绳用去1厘米，绳结长度不计，现在这根长绳长多少厘米？
<gadget id="calculator">8 * 4</gadget>
<output>32</output>

<gadget id="calculator">1 + 1</gadget>
<output>2</output>

<gadget id="calculator">2 * 3</gadget>
<output>6</output>

<gadget id="calculator">32 - 6</gadget>
<output>26</output>

<result>26</result>