Army A travels 11 kilometers in 3 hours, and Army B travels 13 kilometers in 3 hours. What is the speed of vehicle A in fractions of that of vehicle B?
甲军3小时行了11千米，乙军3小时行了13千米，甲车的速度是乙车的多少(分数)．
<gadget id="calculator">11 / 3</gadget>
<output>11/3 = around 3.666667</output>

<gadget id="calculator">13 / 3</gadget>
<output>13/3 = around 4.333333</output>

<gadget id="calculator">(11/3) / (13/3)</gadget>
<output>11/13 = around 0.846154</output>

<result>11/13 = around 0.846154</result>