Xiaohua walks (3/10) kilometers in 4 minutes. How many minutes will it take him to walk around the (4/5) kilometers long runway at this speed?
小华4分钟步行(3/10)千米，他用这样的速度在长(4/5)千米的跑道上走一圈，要用多少分钟？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">(3/10) / 4</gadget>
<output>3/40 = around 0.075</output>

<gadget id="calculator">(4/5) / (3/40)</gadget>
<output>32/3 = around 10.666667</output>

<result>32/3 = around 10.666667</result>