A square log, the bottom of which is a cube with a side length of 8 cm, is cut from the square log with a volume of 1.28 cubic decimeters, how long should it be cut?
一根方木，底面是边长8厘米的正方体，从方木上截下体积是1.28立方分米的一段，应该截多长？
<gadget id="calculator">8 / 10</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">(4/5) * (4/5)</gadget>
<output>16/25 = around 0.64</output>

<gadget id="calculator">1.28 / (16/25)</gadget>
<output>2</output>

<result>2</result>