Uncle Chen traveled (3/5) kilometers in (4/3) minutes by bicycle. How many kilometers per minute does he travel on average?
陈叔叔骑自行车(4/3)分钟行了(3/5)千米．他平均每分钟行多少千米？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">4 / 3</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">(3/5) / (4/3)</gadget>
<output>9/20 = around 0.45</output>

<result>9/20 = around 0.45</result>