Lingling's home is (6/5) kilometers away from the telecom office. It took Lingling to pay the phone bill and walk to and fro for (3/5) hours. How many kilometers does she walk on average per hour?
玲玲家离电信局有(6/5)千米，玲玲缴话费步行往返用了(3/5)小时，平均每小时步行多少千米？
<gadget id="calculator">6 / 5</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">2 / (3/5)</gadget>
<output>10/3 = around 3.333333</output>

<gadget id="calculator">(6/5) * (10/3)</gadget>
<output>4</output>

<result>4</result>