car travels from A to B. When going there, it travels an average of 120 kilometers per hour and arrives in (2/3) hours. It only took (1/2) hour to go back the same way, how many kilometers per hour on average when returning?
一辆汽车从甲地开往乙地．去时平均每小时行120千米，(2/3)小时到达．原路返回时只用了(1/2)小时，返回时平均每小时行多少千米？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(2/3) / (1/2)</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">120 * (4/3)</gadget>
<output>160</output>

<result>160</result>