Xiaohong uses a (4/5) meter long wire to form a square wire frame with a side length of (1/6) meter. How many meters of wire are left? (neglected at joints)
小红用一根长(4/5)米的铁丝围成了一个边长是(1/6)米的正方形铁丝框．铁丝还剩下多少米？(接头处忽略不计)
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">(1/6) * 4</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(4/5) - (2/3)</gadget>
<output>2/15 = around 0.133333</output>

<result>2/15 = around 0.133333</result>