How many centimeters of wire are left after a 90 cm piece of wire is made into a square frame with a side length of 16 cm?
一段90厘米的铁丝，做成边长为16厘米的正方形框架后，还剩下多少厘米的铁丝？
<gadget id="calculator">16 * 4</gadget>
<output>64</output>

<gadget id="calculator">90 - 64</gadget>
<output>26</output>

<result>26</result>