Grandma Liu walks to exercise every day. She walks (4/5) kilometers in (1/5) hour. What is the walking speed of Grandma Liu in kilometers per hour?
刘奶奶每天步行锻炼身体，她(1/5)小时走了(4/5)千米，刘奶奶步行的速度是多少千米/时
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(4/5) / (1/5)</gadget>
<output>4</output>

<result>4</result>